Publications

Submitted

H. Miao, T. T. Zhang, H. X. Li, G. Fabbris, A. H. Said, R. Tartaglia, T. Yilmaz, E. Vescovo, J.-X. Yin, S. Murakami, L. X. Feng, K. Jiang, X. L. Wu, A. F. Wang, S. Okamoto, Y. L. Wang, H. N. Lee, Spin-phonon coupling driven Charge density wave in a Kagome Magnet, (submitted).

D. Kim, X.-G. Sun, X. Gao, H. N. Lee, D. H. Kwon, J. MacManus-Driscoll, and S. Lee, Stable super-capacity all-solid-state nanobattery using binder-free single-crystalline TiO2(B) electrodes, (submitted).

G. Noh, H. Lee, Y. Jin, Y. Kim, C.-H. Yang, H. N. Lee, J. Lee, C. Sohn, and S.-Y. Choi, Strain-engineered ferromagnetic semiconductor in Sr2FeReO6, Adv. Mater. (submitted).

H. Shin, P. Ganesh, P. R. C. Kent, A. Benali, A. Bhattacharya, H. N. Lee, and O. Heinonen, DFT+U and Quantum Monte Carlo study of electronic and optical properties of AgNiO2 and AgNi1−xCoxO2 delafossite, (submitted) https://doi.org/10.48550/arXiv.2204.04572

D. S. Gyan, H. J. Lee, Y. Ahn, J. Carnis, S. Labat, T. Kim, S. Unithrattil, S. H. Chun, S. Kim, I. Eom, S.-Y. Park, K. S. Kim, H. N. Lee, J. Y. Jo, and P. G. Evans, Optically induced picosecond lattice compression in the dielectric layer of a strongly coupled ferroelectric/dielectric superlattice, submitted.

H. Miao, H. X. Li, W. R. Meier, ….Geometry of the charge density wave in the kagome metal AV3Sb5, submitted.

T. Zhang, T. Yilmaz, W. Meier, Y. Pai, J. Lapano, H. X. Li, K. Kaznatcheev, E. Vescovo, A. Huon, M. Brahlek, T. Z. Ward, B. Lawrie, R. G. Moore, H. N. Lee, Y. L. Wang, H. Miao, and B. Sales, Flat band induced negative magnetoresistance in multi-orbital kagome metal (submitted).

H. Li, N. Mohanta, W. R. Meier, T. Yilmaz, K. Kaznatcheev, E. Vescovo, X. Wang, M.-H. Du, S. Okamoto, B. C. Sales, R. G. Moore, H. N. Lee, and H. Miao. Electronic structure of strong spin-orbit coupled kagome metal PtTl, Physical Review Research (submitted).

 J. Zhang, T. Yilmaz, W. Meier, Y. Pai, J. Lapano, H. X. Li, K. Kaznatcheev, E. Vescovo, A. Huon, M. Brahlek, T. Z. Ward, B. Lawrie, R. G. Moore, H. N. Lee, Y. L. Wang, H. Miao, and B. Sales, Flat band induced negative magnetoresistance in multi-orbital kagome metal (submitted).

C. Sohn, S. Okamoto, E. Skoropata, Y. Choi, A. Huon, G. Fabbris, J. Son, S. Y. Kim, D. Lee, J. M. Ok, A. Rastogi, H. Huang, S. J. Lee, J. S. Lee, T. W. Noh, J. W. Freeland, D. Haskel, E.-G. Moon, and H. N. Lee, Two-dimensional ferromagnetic Mott state in 3d-5d double perovskite heterostructures, (submitted).

Accepted

Published

2023

T. Ichibha, S. Yoon, J. M. Ok, M. Yoon, H. N. Lee, and F. A. Reboredo, Thermodynamic understanding of impurity phase segregation in a PdCrO2/CuCrO2 Heterostructure, Adv. Physics. Res. (2023). https://doi.org/10.1002/apxr.202200080

022

Q. Zhang, G. Hu, V. Starchenko, G. Wan, E. M. Dufresne, Y. Dong, H. Liu, H. Zhou, H. Jeen, K. Saritas, J. T. Krogel, F. A. Reboredo, H. N. Lee, A. R. Sandy, R. C. Alamazan, P. Ganesh, and D. Fong, Phase transition dynamics in a complex oxide heterostructure, Phys. Rev. Lett. 129, 235701 (2022).

H. Li, G. Fabbris, A. H. Said, J. P. Sun, Y.-X. Jiang, J.-X. Yin, Y. Y. Pai, S. Yoon, A. R. Lupini, C. S. Nelson, Q. W. Yin, C. S. Gong, Z. J. Tu, H. C. Lei, J.-G. Cheng, Z. M. Hasan, Z. Wang, B. Yan, R. Thomale, H. N. Lee, and H. Miao, Discovery of conjoined charge density waves in the kagome superconductor CsV3Sb5, Nature Commun. 13, 6348 (2022).

A. Huon, J. M. Ok. S. Yoon, A. R. Lupini, and H. N. Lee, Solid-phase epitaxy of a CuAlO2 template on c-Al2O3 for delafossite growth, APL Mater. 10, 08111 (2022).

T. T. Zhang, T. Yilmaz, E. Vescovo, H. X. Li, R. G. Moore, H. N. Lee, H. Miao, S. Murakami, M. A. McguireEndless Dirac nodal lines in kagome-metal Ni3In2S2, npj Compu. Mater. 8, 155 (2022).

D. Shin, S. Yoon, S. Song, S. Park, H. N. Lee, and W. S. Choi, Tunable ferromagnetism in LaCoO3 epitaxial thin filmsAdv. Mater. Interfaces 9, 220433 (2022).

A. R. Mazza, Q. Lu, G. Hu, H. Li, J. F. Browning, T. R. Charlton, M. Brahlek, P. Ganesh, T. Z. Ward, H. N. Lee, and G. Eres, Reversible hydrogen-induced phase transformations in La0.7Sr0.3MnO3 thin films characterized by in situ neutron reflectometry, ACS Appl. Mater. Interfaces, (2022).  https://doi.org/10.1021/acsami.1c20590.

J. Zhang, Y.-Yi Pai, J. Lapano, A. R. Mazza, H. N. Lee, R. G. Moore, B. J. Lawrie, T. Z. Ward, G. Eres, V. R. Cooper, and M. Brahlek, Design and Realization of Ohmic and Schottky Interfaces for Oxide Electronics, Small Sci. 2, 2100087 (2022). 

2021

H. Miao, H. X. Li, W. R. Meier, A. Huon, H. N. Lee, A. Said, H. C. Lei, B. R. Ortiz, S. D. Wilson, J. X. Yin, M. Z. Hasan, Z. Wang, H. Tan, and B. Yan, Geometry of the charge density wave in the kagome metal AV3Sb2, Phys. Rev. B 104, 195132 (2021).

J. Zhang, J. M. Ok, Y.-Y. Pai, J. Lapano, E. Skoropata, A. R. Mazza, H. Li, A. Huon, S. Yoon, B. Lawrie, M. Brahlek, T. Z. Ward, G. Eres, H. Miao, and H. N. Lee, Extremely large magnetoresistance in high-mobility SrNbO3/SrTiO3 heterostructures, Phys. Rev. B 104, L161404 (2021). 

D. S. Gyan, H. J. Lee, Y. Ahn, J. Carnis, S. Labat, T. Kim, S. Unithrattil, S. H. Chun, S. Kim, I. Eom, S.-Y. Park, K. S. Kim, H. N. Lee, J. Y. Jo, and P. G. Evans, Optically induced picosecond lattice compression in the dielectric layer of a strongly coupled ferroelectric/dielectric superlattice, Adv. Electron. Mater. 2101051 (2021). 

N. Mohanta, J. M. Ok, J. Zhang, H. Miao, E. Dagotto, H. N. Lee, and S. Okamoto, Semi-Dirac and Weyl fermions in transition metal oxides, Phys. Rev. B 104, 235121 (2021). 

J. M. Ok, N. Mohanta, J. Zhang, S. Yoon, S. Okamoto, E. S. Choi, H. Zhou, M. Briggeman, P. Irvin, A. R. Lupini, Y.-Y. Pai, E. Skoropata, C. Sohn, H. Li, H. Miao, B. Lawrie, W. S. Choi, G. Eres, J. Levy, and H. N. Lee, Correlated oxide Dirac semimetal in the extreme quantum limit, Sci. Adv. 7, eabf9631 (2021). 

J. Lapano, Y.-Y. Pai, A. R. Mazza, J. Zhang, T. Isaacs-Smith, P. Gemperline, L. Zhang, H. Li, H. N. Lee, G. Eres, M. Yoon, R. Comes, T. Z. Ward, B. J. Lawrie, M. A. McGuire, R. G. Moore, C. T. Nelson, A. F. May, and M. Brahlek, Self-regulated growth of candidate topological superconducting parkerite by molecular beam epitaxy,  APL Mater. 9, 101110 (2021). 

J. LapanoO. DyckA. R. LupiniW. KoH. LiH. MiaoH. N. LeeA.-P LiM. BrahlekS. Jesse, and R. G. Moore, van der Waals epitaxy growth of Bi2Se3 on a freestanding monolayer graphene membrane: Implications for layered materials and heterostructuresACS Appl. Nano Mater4, 7607 (2021). 

A. Huon, S. Yoon, M. R. Fitzsimmons, T., R. Charlton, J. M. Ok, C. dela Cruz, and H. N. LeeEffects of Sn substitution in SrRuO3 epitaxial films, Appl. Phys. Lett. 119, 112404 (2021).

 J. M. Ok, S. Yoon, A. R. Lupini, P. Ganesh, A. Huon, M. F. Chisholm, and H. N. LeeTwin-domain formation in epitaxial triangular lattice delafossites, ACS Appl. Mater. Interfaces, 13, 22059 (2021).

H. Li, T. T. Zhang, T. Yilmaz, Y.-Y. Pai, C. Marvinney, A. Said, Q. W. Yin, C. S. Gong, Z. J. Tu, E. Vescovo, C. S. Nelson, R. G. Moore, S. Murakami, H. C. Lei, H. N. Lee, B. Lawrie, and H. Miao, Observation of unconventional charge density wave without acoustic phonon anomaly in kagome superconductors AV3Sb5 (A=Rb, Cs), Phys. Rev. X 11, 031050 (2021).

H. Li, T. Zhang, A. Said, Y. Fu, G. Fabbris, D. G. Mazzone, J. Zhang, J. Lapano, H. N. Lee, H. C. Lei, M. P. M. Dean, S. Murakami, and H. Miao, Observation of a Chiral Wave Function in Twofold Degenerate Quadruple Weyl System BaPtGe, Phys. Rev. B 103, 184301 (2021). https://arxiv.org/abs/2010.00764

H. Li, T. T. Zhang, A. Said, G. Fabbris, D. G. Mazzone, J. K. Keum, J. Q. Yan, D. Mandrus, S. Murakami, G. Halasz, S. Okamoto, M. P. M. Dean, H. N. Lee, and H. Miao, Giant phonon anomalies in the proximate Kitaev quantum spin liquid α-RuCl3, Nat. Commun. 12, 3513 (2021).

C. Sohn, X. Gao, R. K. Vasudevan, S. M. Neumayer, N. Balke, J. M. Ok, D. Lee, E. Skoropata, H. Y. Jeong, Y.-M. Kim, and H. N. Lee, Strain-driven autonomous control of cation distribution for artificial ferroelectrics, Sci. Adv. 7, eabd7394 (2021).

S. Yoon, X. Gao, J. M. Ok, Z. Liao, M.-G. Han, Y. Zhu, P. Ganesh, M. F. Chisholm, W. S. Choi, H. N. Lee, Strain-induced atomic-scale building blocks for ferromagnetism in epitaxial LaCoO3, Nano Lett. (2021).
 

S. Yoon, J. M. Ok, S. A. Lee, J. Lee, A. Huon, A. R. Lupini, W. S. Choi, and H. N. Lee, Atomic structure of the initial nucleation layer in hexagonal perovskite BaRuO3 thin films, Adv. Mater. Interfaces 2100023 (2021).

E. Skoropata, A. Mazza, A. Herklotz, J. M. Ok, G. Eres, M. Brahlek, T. R. Charlton, H. N. Lee, and T. Z. Ward, Post-synthesis control of Berry phase driven magnetotransport in SrRuO3 films, Phys. Rev. B 103, 085121 (2021).

H. Miao, Y. L. Wang, J.-X. Yin, J. Zhang, S. Zhang, M. Z. Hasan, R. Yang, X. C. Wang, C. Q. Jin, T. Qian, H. Ding, H. N. Lee, and G. Kotliar, Hund’s superconductor Li(Fe,Co)As,  Phys. Rev. B 103, 054503 (2021).

2020

 J. Lapano, L. Nuckols, A. R. Mazza, Y. Y. Pai, J. Zhang, B. Lawrie, R. G. Moore, G. Eres, H. N. Lee, M.-H. Du, T. Z. Ward, J. S. Lee, W. J. Weber, Y. Zhang, and M. Brahlek, Adsorption-controlled growth of MnTe(Bi2Te3)n by molecular beam epitaxy exhibiting stoichiometry-controlled magnetismPhys. Rev. Mater4, 111201 (2020). 

 J. Lapano, A. R. Mazza, H. Li, D. Mukherjee, E. M. Skoropata, J. M. Ok, H. Miao, R. G. Moore, T. Z. Ward, G. Eres, H. N. Lee, M. BrahlekStrong spin-dephasing in a topological insulator- paramagnet heterostructureAPL Mater. 8, 091113 (2020). 

Q. Lu, C. Sohn, G. Hu, X. Gao, M. F. Chisholm, I. Kylanpaa, J. T. Krogel, P. R. C. Kent, O. Heinonen, and H. N. Lee, Metal-insulator transition tuned by oxygen vacancy migration across VO2/TiO2 interface, Sci. Rep. 10, 18554 (2020).

(Editor’s suggestion) D. Nevola, H. X. Li, J.-Q. Yan, R. G. Moore, H. N. Lee, H. Miao, and P. D. Johnson, Coexistence of surface ferromagnetism and gapless topological state in MnBi2Te4, Phys. Rev. Lett. 125, 117205 (2020). Featured in Physics: An Intrinsically Magnetic Topological Insulator

S. Lee, X. Gao, C. Sohn, Y. Ha, S. Yoon, J. M. Ok, M. F. Chisholm, T. W. Noh, and H. N. Lee, Templated epitaxy of TiO2(B) on a perovskite, Appl. Phys. Lett. 117, 133903 (2020).

G. Eres, S. Lee, J. Nichols, C. Sohn, J. M. Ok, A. Mazza, C. Liu, G. Duscher, H. N. Lee, D. E. McNally, X. Lu, M. Radovic, and T. Schmitt, Versatile tunability of the metal insulator transition in (TiO2)m/(VO2)m superlattices, Adv. Funct. Mater. 2004914 (2020).

J. M. Ok, S. Yoon, A. Lupini, P. Ganesh, M. F. Chisholm, and H. N. Lee, Intermixing-assisted formation of a CuAl1-xCrxO2 buffer layer for epitaxy of delafossites, Sci. Rep. 10, 11375 (2020).

E. Skoropata, J. Nichols, J. M. Ok, R. V. Chopdekar, E. S. Choi, A. Rastogi, C. Sohn, X. Gao, S. Yoon, T. Farmer, R. D. Desautels, Y. Choi, D. Haskel, J. W. Freeland, S. Okamoto, M. Brahlek, and H. N. Lee, Interfacial tuning of chiral magnetic interactions for large topological Hall effects in LaMnO3/SrIrO3 heterostructures, Science Adv. 6, eaaz3902 (2020).
 
J. M. Ok, M. Brahlek, W. S. Cho, K. M. Roccapriore, M. F. Chisholm, S. Kim, C. Sohn, E. Skoropata, S. Yoon, J. S. Kim, and H. N. Lee, Pulsed-laser epitaxy of metallic delafossite PdCrO2 filmsAPL Mater. 8, 051104 (2020).

M. Fang, Y. Wang, H. Wang, E. Vetter, Y. Kou, W. Yang, L. Yin, Z. Xiao, Z. Li, L. Jiang, H. N. Lee, Z. Shufeng, R. Wu, D. Sun, X. Xu, and J. Shen, Tuning the interfacial spin-orbit coupling with ferroelectricity, Nature Commun. 11, 2627 (2020).

F. Wrobel, H. Park, C. Sohn, H.-W. Hsiao, J.-M. Zuo, H. Shin, H. N. Lee, P. Ganesh, J. T. Krogel, A. Berali, P. R. C. Kent, O. Heinonen, A. Bhattacharya, Doped NiO: The Mottness of a charge transfer insulator

Phys. Rev. B 101, 195128 (2020).

L. Fan, X, Gao, T. O. Farmer, D. Lee, E. J. Guo, S. Mu, K. Wang, M. R. Fitzsimmons, M. F. Chisholm, T. Z. Ward, G. Eres, and H. N. Lee, Vertically aligned single-crystalline CoFe2O4 nanobrush architectures with high magnetization and tailored magnetic anisotropyNanomaterials, 10, 472 (2020).

D. Lee, X. Gao, L. Sun, Y. Jee, J. Poplawsky, T. O. Farmer, L. Fan, E.-J. Guo, Q. Lu, W. T. Heller, Y. Choi, D. Haskel, M. R. Fitzsimmons, M. F. Chisholm, K. Huang, B. Yildiz, and H. N. Lee, Colossal oxygen vacancy formation at a fluorite-bixbyite interfaceNature Commun. 11, 1371 (2020).
 

Y. Zhang, M. Kim, J. Mravlje, C. Sohn, Y. Choi, J. Strempfer, Y. Hotta, A. Yasui, J. Nichols, H. N. Lee, and H. WadatiPhotoemission and dynamical mean field theory study of electronic correlations in a t2g metal SrRhO3 thin film, Phys. Rev. B 101, 085134 (2020).

K. P. Kelley, D. E. Yilmaz, L. Collins, Y. Sharma, H. N. Lee, D. Akbarian, A.C.T. van Duin, P. Ganesh, and R. K. VasudevanThickness and strain dependence of piezoelectric coefficient in BaTiO3 thin filmsPhys. Rev. Mater. 4, 024407 (2020).

2019

Y. Sharma, R. Agarwal, L. Collins, Q. Zheng, A. V. Ievlev, R. P. Hermann, V. R. Cooper, S. KC, I. N. Ivanov, R. S. Katiyar, S. V. Kalinin, H. N. Lee, S. Hong, and T. Z. Ward, Self‐Assembled Room Temperature Multiferroic BiFeO3‐LiFe5ONanocompositesAdv. Funct. Mater. 30(3), 1906849 (2019).

K. Saritas, J. T. Krogel, S. Okamoto, H. N. Lee, and F. A. Reboredo, Structural, electronic, and magnetic properties of bulk and epitaxial LaCoO3 through diffusion Monte Carlo, Phys. Rev. Mater. 3, 124414 (2019). 

M. Fang, S. Zhang, W. Zhang, L. Jiang, E. Vetter, H. N. Lee, X. Xu, D. Sun, and J. Shen, Nonvolatile multilevel states in multiferroic tunnel junctionsPhys. Rev. Appl. 12, 044049 (2019).

[Editor’s pick article] A. Rastogi, M. Brahlek, J. M. Ok, Z. Liao, C. Sohn, S. Feldman, and H. N. Lee, Metal-insulator transition in (111) SrRuO3 ultrathin filmsAPL Mater. 7, 091106 (2019). 

G. Eres, C. M. Rouleau, Q. Lu, Z. Zhang, E. Benda, H. N. Lee, J. Z. Tischler, and D. D. FongExperimental setup combining in situ hard X-ray photoelectron spectroscopy and real-time surface X-ray diffraction for characterizing atomic and electronic structure evolution during complex oxide heterostructure growthRev. Sci. Instrum90, 093902 (2019).

M. Brahlek, G. Rimal, J. M. Ok, D. Mukherjee, A. Mazza, Q. Lu, H. N. Lee, T. Z. Ward, R. R. Unocic. G. Eres, S. Oh, Growth of metallic delafossite PdCoO2 by molecular beam epitaxyPhys. Rev. Mater. 3, 093401 (2019). 

Y. Sharma, M. V. Holt, N. Laanait, X. Gao, I. Ivanov, L. Collins, C. Sohn, Z. Liao, E. Skoropata, S. V. Kalinin, N. Balke, G. Eres, T. Z. Ward, and H. N. Lee, Competing phases in epitaxial vanadium dioxide at nanoscaleAPL Mater7, 081127 (2019).

S. J. Noh, G. H. Ahn, J. H. Seo, Z. Gai, H. N. Lee, W. S. Choi, and S. J. Moon, (LaCoO3)n/(SrCoO2.5)n superlattices: Tunable ferromagnetic insulatorPhys. Rev. B 100, 064415 (2019). 

C. M. Folkman, S. H. Chang, H. Jeen, E. Perret, P. M. Baldo, C. Thompson, J. A. Eastman, H. N. Lee, and D. D. Fong, In operando studies of CO oxidation on epitaxial SrCoO2.5+d thin filmsAPL Mater. 7, 081126 (2019).

E. Guo, R. Desautels, D. Lee, M. A. Roldan, Z. Liao, T. Charlton, H. Ambaye, J. Molaison, R. Boehler, D. Keavney, A. Herklotz, T. Z. Ward, H. N. Lee, and M. R. Fitzsimmons, Exploiting symmetry mismatch to control magnetism in a ferroelastic heterostructurePhys. Rev. Lett. 122, 187202 (2019).

Y. Sharma, A. T. Wong, A. Herklotz, D. Lee, A. V. Ievlov, L. Collins, H. N. Lee, S. Dai, N. Balke, P. D. Rack, and T. Z. Ward, Ionic gating of ultrathin and leaky ferroelectricsAdv. Mater. Interfaces6, 1801723 (2019).

Z. Liao, M. Brahlek, J. M. Ok, L. Nuckols, Y. Sharma, Q. Lu, Y. Zhang, and H. N. Lee, Pulsed-laser epitaxy of topological insulator Bi2Te3 thin filmsAPL Mater7, 041101 (2019).

E.-J. Guo, R. D. Desautels, D. Keavney, M. A. Roldan, B. J. Kirby, D. Lee, Z. Liao, T. Charlton, A. Herklotz, T. Z. Ward, M. R. Fitzsimmons, and H. N. Lee, Nanoscale ferroelastic twins formed in strained LaCoO3 films, Sci. Adv5, eaav5050 (2019).

Z. Liao, E. Skoropata, J. W. Freeland, E.-J. Guo, R. Desautels, X. Gao, C. Sohn, A. Rastogi, T. Z. Ward, T. Zhou, T. Charlton, M. R. Fitzsimmons, and H. N. Lee, Large orbital polarization in nickelate-cuprate heterostructures by dimensional control of oxygen coordinationNature Commun. 10, 589 (2019).

[Front cover article] C. Sohn, E. Skoropata, Y. Choi, X. Gao, A. Rastogi, A. Huon, M. A. McGuire, L. Nuckols, Y. Zhang, J. Freeland, D. Haskel, and H. N. Lee, Room-temperature ferromagnetic insulating state in highly cation-ordered double perovskite Sr2Fe1+xRe1−xO6 filmsAdv. Mater31, 1805389 (2019).

E.-J. Guo, R. D. Desautels, D. Keavney, A. Herklotz, T. Z. Ward, M. R. Fitzsimmons, and H. N. Lee, Switchable orbital polarization and magnetization in strained LaCoO3 filmsPhys. Rev. Mater3, 014407 (2019).

2018

Huon, A. M. Vibhakar, A. J. Grutter, J. A. Borchers, S. Disseler, Y. Liu, W. Tian, F. Orlandi, P. Manuel, D. D. Khalyavin, Y. Sharma, A. Herklotz, H. N. Lee, M. R. Fitzsimmons, R. D. Johnson, and S. J. May, Helical magnetism in Sr-doped CaMn7O12 filmsPhys. Rev. B 98, 224419 (2018).

Y. Wen, T. Yang, D. Lee, H. N. Lee, E. J. Crumlin, and K. Huang, Temporal and thermal evolutions of surface Sr-segregation in pristine and atomic layer deposition modified La0.6Sr0.4CoO3-d epitaxial filmsJ. Mater. Chem. A 6, 24378 (2018).

E.-J. Guo, M. A. Roldan, X. Sang, S. Okamoto, T. Charlton, H. Ambaye, H. N. Lee, and M. R. Fitzsimmons, Influence of chemical composition and crystallographic orientation on the interfacial magnetism in BiFeO3/La1-xSrxMnO3 superlatticesPhys. Rev. Mater2, 114404 (2018).

R. K. Vasudevan, H. Dixit, A. Tselev, L. Qiao, T. L. Meyer, V. R. Cooper, A. P. Baddorf, H. N. Lee, P. Ganesh, and S. V. Kalinin, Surface reconstructions and modified surface states in La1-xCaxMnO3Phys. Rev. Mater. 2, 104418 (2018).

J. Hwang, R. Rao, Y. Katayama, D. Lee, X. Wang, E. Crumlin, T. Venkatesan, H. N. Lee, Y. Shao-Horn, CO2 reactivity on cobalt-based perovskitesJ. Phys. ChemC 122, 20391 (2018).

Y. Sharma, J. Balachandran, C. Sohn, J. T. Krogel, P. Ganesh, L. Collins, Q. Li, N. Balke, S. Kalinin, O. Heinonen, and H. N. Lee, Nanoscale control of metal-insulator transition in epitaxial vanadium dioxidesACS Nano 12, 7159 (2018).

Y. Sharma, B. L. Musico, X. Gao, C. Hua, A. F. May, A. Herklotz, A. Rastogi, D. Mandrus, J. Yan, H. N. Lee, M. F. Chisholm, V. Keppens, and T. Z. Ward, Single-crystal high entropy perovskite oxide epitaxial films, Phys. Rev. Materials 2, 060404(R) (2018).

Q. Lu, S. R. Bishop, D. Lee, S. Lee, H. Bluhm, H. L. Tuller, H. N. Lee, and B. Yildiz, Electrochemically triggered metal-insulator transition between VO2 and V2O5Adv. Funct. Mater. 1803024 (2018). 

E. -J. Guo, M. A. Roldan, T. Charlton, Z. Liao, Q. Zheng, H. Ambaye, A. Herklotz, Z. Gai, T. Z. Ward, H. N. Lee, and M. R. Fitzsimmons, Removal of the magnetic dead layer by geometric designAdv. Funct. Mater. 1800922 (2018).

R. Agarwal, Y. Sharma, S. Chang, K. Pitike, C. Sohn, S. M. Nakhmanson, C. G. Takoudis, H. N. Lee, R. Tonelli, J. Gardner, J. F. Scott, R. S. Katiyar, and S. Hong, Room-temperature relaxor ferroelectricity and photovoltaic effects in tin titanate directly deposited on a silicon substratePhys. Rev. B 97, 054109 (2018).

E.-J Guo, Y. Liu, C. Sohn, R. D. Desautels, A. Herklotz, Z, Liao, J. Nichols, J. W. Freeland, M. R. Fitzsimmons, and H. N. Lee, Oxygen diode formed in nickelate heterostructures by chemical potential mismatchAdv. Mater. 1705904 (2018).

[Editor’s choice] T. Meyer, R. Jacobs, D. Lee, L. Jiang, J. W. Freeland, C. Sohn, T. Egami, D. Morgan, and H. N. Lee, Strain control of oxygen kinetics in the Ruddlesden–Popper oxide La1.85Sr0.15CuO4Nature Commun9, 92 (2018).

P. C. Rogge, R. U. Chandrasena, A. Cammarata, R. J. Green, P. Shafer, B. M. Leer, A. Huon, A. Arab, E. Arenholz, H. N. Lee, T.-L. Lee, S. Nemsak, J. M. Rondinelli, A. X. Gray, and S. J. May, Electronic structure of negative charge transfer CaFeO3 across the metal-insulator transitionPhys. Rev. Mater. 2, 015002 (2018).

2017

S. Tan, M. B. Grey, M. K. Kidder, Y. Cheng, L. L. Daemen, D. Lee, H. N. Lee, Y.-Z. Ma, B. Doughty, and D. A. Lutterman, Insight into the selectivity of isopropanol conversion at strontium titanate (100) surfaces: A combination kinetic and spectroscopic studyACS Catal7, 8118 (2017).

J. H. Lee, W. S. Choi, H. Jeen, H. J. Lee, J. H. Seo, J. Nam, M. S. Yeom, and H. N. Lee, Strongly Coupled Magnetic and Electronic Transitions in Multivalent Strontium Cobaltites, Sci. Rep7, 16066 (2017).

D. Lee, R. Jacobs, Y. Jee, A. Seo, C. Sohn, A. Levlev, O. Ovchinnikova, K. Huang, D. Morgan, and H. N. Lee, Stretching epitaxial La0.6Sr0.4CoO3-δ for fast oxygen reductionJ. Phys. ChemC 121, 25651 (2017).

Kwon, D. Seol, D. Lee, H. Han, I. Lindfors-Vrejoiu, W. Lee, S. Jesse, H. N. Lee, S. V. Kalinin, M. Alexe, and Y. Kim, Direct probing of polarization charge at nanoscale levelAdv. Mater. 1703675 (2017).

[Featured Review] A. Herklotz, D. Lee, E.-J. Guo, T. L. Meyer, J. R. Petrie, and H. N. Lee, Strain coupling of oxygen nonstoichiometry in perovskite thin filmsJ. Phys.: Condens. Matter 29, 493001 (2017).

Huon, D. Lee, A. Herklotz, M. R. Fitzsimmons, H. N. Lee, and S. May, Effect of chemical pressure on the electronic phase transition in Ca1-xSrxMn7O12 filmsAPL Mater. 5, 096105 (2017).

X. Pan, X. Gao, X. Chen, H. N. Lee, and Z. Yi, Design synthesis of nitrogen-doped TiO2@carbon nanosheets toward selective nitroaromatics reduction under mild conditionsACS Catalysis 7, 6991 (2017).

B. Doughty, S. G. Srinivasan, V. S. Brayantsev, D. Kee, H. N. Lee, Y.-Z. Ma, and D. A. Lutterman, Absolute molecular orientation of isopropanol at ceria (100) surfaces: Insight into catalytic selectivity from interfacial structureJ. Phys. Chem. C 121, 14137 (2017).

W. Zhu, Z. Wu, G. S. Foo, X. Gao, M. Zhou, B. Liu, G. M. Veith, P. Wu, K. L. Browning, H. N. Lee, H. Li, S. Dai, and H. Zhu, Taming interfacial electronic properties of platinum nanoparticles on vacancy-abundant boron nitride nanosheets for enhanced catalysis, Nature Commun8, 15291 (2017).

S. Ryu, J. Lee, E. Ahn, J.-W. Kim, A. Herklotz, J. S. Bae, H. N. Lee, Y. H. Kim, J.-Y. Kim, T. Jeon, J. H. Cho, S. Park, and H. Jeen, Growth of electronically distinct manganite thin films by modulating cation stoichiometryAppl. Phys. Lett. 110, 261601 (2017).

J. Nichols, S. Yuk, C. Sohn, H. Jeen, J. W. Freeland, V. R. Cooper, and H. N. Lee, Electronic and magnetic properties of epitaxial SrRhO3 filmsPhys. Rev. B 95, 245121 (2017).

E. J. Guo, J. R. Petrie, M. A. Roldan, Q. Li, R. D. Desautels, T. Charlton, A. Herklotz, J. Nichols, J. W. Freeland, S. V. Kalinin, H. N. Lee, and M. R. Fitzsimmons, Spatially resolved large magnetization in ultrathin BiFeO3Adv. Mater. 1700790 (2017).

E. Guo, T. Charlton, H. Ambaye, R. Desautels, H. N. Lee, and M. R. Fitzsimmons, Orientation control of interfacial magnetism at La0.67Sr0.33MnO3/SrTiO3 interfacesACS Appl. Mater. Interfaces 9, 19307 (2017).

S. Okamoto, J. Nichols, C. Sohn, S. Kim, T. W. Noh, and H. N. Lee, Charge transfer in iridate-manganite superlatticesNano Lett17, 2126 (2017).

S. Lee, X.-G. Sun, A. A. Lubimtsev, X. Gao, G. Panchapakesan, T. Z. Ward, G. Eres, M. F. Chisholm, S. Dai, and H. N. Lee, Persistent electrochemical performance in epitaxial VO2(B)Nano Lett17, 2229 (2017).

L. Fan, X. Gao, D. Lee, E. J. Guo, S. Lee, P. C. Snijders, T. Z. Ward, G. Eres, M. F. Chisholm, H. N. Lee, Kinetically controlled fabrication of single-crystalline TiO2 nanobrush architectures with high energy {001} facetsAdv. Sci. 1700045 (2017).

W. S. Choi, K. T. Kang, H. Jeen, Z. Gai, and H. N. Lee, Highly insulating ferromagnetic cobaltite heterostructuresCurrent Appl. Phys17, 722 (2017).

(Review) D. Lee and H. N. Lee, Controlling oxygen mobility in Ruddlesden-Popper OxidesMaterials 10, 368 (2017).

Z. Diao, H. N. Lee, M. F. Chisholm, and R. Jin, Thermoelectric properties of Bi2Sr2Co2Oy thin films and single crystalsPhysica B 511, 42 (2017).

A. Herklotz, E. Guo, A. T. Wong, T. L. Meyer, S. Dai, T. Z. Ward, H. N. Lee, and M. R. Fitzsimmons, Reversible control of interfacial magnetism through ionic-liquid-assisted polarization switchingNano Lett17, 1665 (2017).

D. Lee, X. Gao, L. Fan, E.-J. Guo, T. O. Farmer, W. T. Heller, T. Z. Ward, G. Eres, M. R. Fitzsimmons, M. F. Chisholm, and H. N. Lee, Nonequilibrium Synthesis of Highly Porous Single-Crystalline Oxide NanostructuresAdv. Mater. Interfaces4, 1601034 (2017).

2016

T. L. Meyer, A. Herklotz, V. Lauter, J. W. Freeland, J. Nichols, E.-J. Guo, S. Lee, T. Z. Ward, N.  Balke, S. V. Kalinin, M. R. Fitzsimmons, and H. N. Lee, Enhancing interfacial magnetization with a ferroelectricPhys. Rev. B 94, 174432 (2016).

G. Eres, J. Z. Tischler, C. M. Rouleau, H. N. Lee, H. M. Christen, P. Zschack, and B. C. Larson, Dynamic scaling and island growth kinetics in pulsed laser deposition of SrTiO3Phys. Rev. Lett117, 206102 (2016). 

X. Gao, S. Lee, J. Nichols, T. L. Meyer, T. Z. Ward, M. F. Chisholm, and H. N. Lee, Nanoscale self-templating for oxide epitaxy with large symmetry mismatchSci. Rep6, 38168 (2016).

J. Holleman, M. M. Bishop, C. Garcia, J. S. R. Vellore Winfred, S. Lee, H. N. Lee, C. Beekman, E. Manousakis, and S. A. McGill, Evidence for Impact ionization in vanadium dioxidePhys. Rev. B 94, 155129 (2016).

J. Thompson, J. Hwang, S. Ryee, J. Gruenewald­, J. G. Connell, J. Nichols, S. Lee, M. J. HanHN. Lee, D.-W. Kim, and S. S. A. Seo, Enhanced metallic properties of SrRuO3 thin films via kinetically controlled pulsed laser epitaxyAppl. Phys. Lett109, 161902 (2016).

B. Kim, D. Seol, S. Lee, H. N. Lee, and Y. Kim, Ferroelectric-like hysteresis loop originated from non-ferroelectric effectsAppl. Phys. Lett109, 102901 (2016).

J. E. Hamann-Borrero, S. Macke, W. S. Choi, R. Sutarto, F. He, A. Radi, I. Elfimov, J. Green, M. W. Haverkort, V. B. Zabolotnyy, H. N. Lee, G. A. Sawatzky, and V. Hinkov, Valence state reflectometry of complex oxide heterointerfaces, npj Quant. Mater. 1, 16013 (2016).

A. Herklotz, H. W. Guo, A. T. Wong, H. N. Lee, P. D. Rack, and T Z. Ward, Multimodal responses of self-organized circuitry in electronically phase separated materialsAdv. Electro. Mater2, 1600189 (2016). Cover image article.

D. Seol, S. Park, O. Varenyk, S. Lee, H. N. Lee, A. Morozovska, Y. Kim, Determination of ferroelectric contributions to electromechanical response by frequency dependent piezoresponse force microscopySci. Rep. 6, 30579 (2016).

J. Nichols, X. Gao, S. Lee, T. L. Meyer, J. W. Freeland, V. Lauter, D. Yi, J. Liu, D. Haskel, J. R. Petrie, E. Guo, A. Herklotz, D. Lee, T. Z. Ward, G. Eres, M. R. Fitzsimmons, and H. N. Lee, Emerging magnetism and anomalous Hall effect in iridate-manganite heterostructuresNature Comm. 7, 12721 (2016). 

J. R. Petrie, H. Jeen, S. C. Barron, T. L. Meyer, and H. N. Lee, Enhancing perovskite electrocatalysis through strain tuning of the oxygen deficiencyJ. Am. Chem. Soc138, 7252 (2016). 

A. Herklotz, A. Wong, T. Meyer, M. Biegalski, H. N. Lee, and T. Z. Ward, Controlling octahedral rotations in a perovskite via strain dopingSci. Rep6, 26491 (2016).

Tselev, R. K. Vasudevan, A G. Gianfrancesco, L. Qiao, T. L. Meyer, H. N. Lee, M. D. Biegalski, A. P. Baddorf, and S. V. Kalinin, Growth mode transition in complex oxide heteroepitaxy: Atomically resolved studiesCryst. Growth Des16, 2708 (2016).

H. Wang, J. Wen, D. J. Miller, Q. Zhou, H. N. Lee, K. M. Rabe, and X. Wu, Stabilization of highly polar BiFeO3-like structure: a new interface design route for enhanced ferroelectricity in artificial perovskite superlatticesPhys. Rev. X6, 011027 (2016). – Featured also in Physics Viewpoint (http://physics.aps.org/articles/v9/28)

Z. Q. Liu, L. Li, Z. Gai, J. D. Clarkson, A. T. Wong, L. S. Fan, M.-W. Lin, J. M. Black, N. Balke, C. M. Rouleau, T. Z. Ward, H. N. Lee, A. S. Sefat, H. M. Christen, and R. Ramesh, Full electroresistance modulation in a mixed-phase metallic alloy, Phys. Rev. Lett. 116, 097203 (2016).

Y. Wang, S. Lee, P. Vilmercati, H. N. Lee, H. H. Weitering, and P. C. Snijders, Atomically flat reconstructed rutile TiO2(001) surfaces for oxide film growthAppl. Phys. Lett108, 091604 (2016).

J. R. Petrie, V. R. Cooper, J. W. Freeland, T. L. Meyer, Z. Zhang, D. A. Lutterman, and H. N. Lee, Enhanced bifunctional oxygen catalysis in strained LaNiO3 perovskitesJ. Am. Chem. Soc138, 2488 (2016). 

J. R. Petrie, C. Mitra, H. Jeen, W. S. Choi, T. Meyer, F. A. Reboredo, J. W. Freeland, G. Eres, and H. N. Lee, Strain control of oxygen vacancies in epitaxial strontium cobaltite filmsAdv. Funct. Mater. 26, 1564 (2016).

S. Lee, I. N. Ivanov, J. K. Keum, and H. N. Lee, Epitaxial stabilization and phase instability of VO2 polymorphsSci. Rep. 6, 19621 (2016).

H. N. Lee, S. S. A. Seo, W. S. Choi, and C. M. Rouleau, Growth control of oxygen stoichiometry in homoepitaxial SrTiO3 films by pulsed laser epitaxy in high vacuumSci. Rep. 6, 19941 (2016).

W. T. Hong, K. A. Stoerzinger, E. J. Crumlin, E. Mutoro, H. Jeen, H. N. Lee, and Y. Shao-Horn, Near-ambient pressure XPS of high-temperature surface chemistry in Sr2Co2O5 thin filmsTopics in Catalysis 59, 574 (2016).

Y.-L. Lee, D. Lee, X. R. Wang, H. N. Lee, D. Morgan, and Y. Shao-Horn, Kinetics of Oxygen Surface Exchange on Epitaxial Ruddlesden-Popper Phases and Correlations to First-Principles DescriptorsJ. Phys. Chem. Lett. 7, 244 (2016).

Z. Q. Liu, M. D. Biegalski, S. L. Hsu. S. L. Shang, C. Marker, J. Liu, L. Li, T. Meyer, A. T. Wong, J. A. Nichols, D. Y. Chen, L. You, Z. H. Chen, K. Wang, K. Wang, T. Z. Ward, Z. Gai, H. N. Lee, A. S. Sefat, V. Lauter, Z. K. Liu, and H. M. Christen, Epitaxial growth of intermetallic MnPt films on oxides and large exchange biasAdv. Mater. 28, 118 (2016)

T. L. Meyer, H. Jeen, X. Gao, J. R. Petrie, M. F. Chisholm, and H. N. Lee, Symmetry-driven atomic rearrangement at a brownmillerite-perovskite interfaceAdv. Electron. Mater2, 1500201 (2016).

2015

S. Lee, T. L. Meyer, C. Sohn, D. Lee, J. Nichols, D. Lee, S. S. A. Seo, J. W. Freeland, T. W. Noh, and H. N. Lee, Electronic structure and insulating gap in epitaxial VO2 polymorphsAPL Mater. 3, 126109 (2015).

T. L. Meyer, L. Jiang, S. Park, T. Egami, and H. N. Lee, Strain-relaxation and critical thickness of epitaxial La1.85Sr0.15CuO4 filmsAPL Mater3, 126102 (2015).

L. Poudel, C. de la Cruz, E. A. Payzant, A. F. May, M. Koehler, V. O. Garlea, A. E. Taylor, D. S. Parker, H. B. Cao, M. A. McGuire, W. Tian, M. Matsuda, H. Jeen, H. N. Lee, T. Hong, S. Calder, H. D. Zhou, M. D. Lumsden, V. Keppens, D. Mandrus, and A. D. Christianson, Structural and Magnetic Phase Transitions in CeCu6-xTx (T = Ag, Pd)Phys. Rev. B92, 214421 (2015).

H. Jeen and H. N. Lee, Structural evolution of epitaxial SrCoOx films during topotactic phase transitionAIP Advances 5, 127123 (2015).

A. Glamazda, K.-Y. Choi, P. Lemmens, W. S. Choi, H. Jeen, T. L. Meyer, and H. N. Lee, Structural instability of the CoO4 tetrahedral chain in SrCoO3-δ thin filmsJ. Appl. Phys118, 085313 (2015).

W. S. Choi, S. A. Lee, I. R. Hwang, S. Lee, and H. N. Lee, Resonant tunneling in a quantum oxide superlatticeNature Commun. 6, 7424 (2015).

H. N. Lee, A new class of materials, International Innovations173, 61 (2015).

K. A. Stoerzinger, W. S. Choi, H. Jeen, H. N. Lee, and Y. Shao-Horn, Role of Strain and conductivity in oxygen electrocatalysis on LaCoO3 thin filmsJ. Phys. Chem. Lett6, 487 (2015).

W. S. Choi and H. N. Lee, Strain tuning of electronic structure in Bi4Ti3O12-LaCoO3 epitaxial thin filmsPhys. Rev. B91, 174101 (2015).

J. H. You, J. H. Lee, S. Okamoto, V. Cooper, and H. N. Lee, Strain effects on the electronic properties in δ-doped oxide superlatticesJ. Phys. D: Appl. Phys48, 085303 (2015).

A. Tselev, R. K. Vasudevan, A. G. Gianfrancesco, L. Qiao, P. Ganesh, T. L. Meyer, H. N. Lee, M. D. Biegalski, A. P. Baddorf, and S. V. Kalinin, Surface control of epitaxial manganite films via oxygen pressureACS Nano 9, 4316 (2015).

P. Munkhbaatar, Z. Marton, B. Tsermaa, W. S. Choi, S. S. A. Seo, J. S. Kim, N. Nakagawa, H. Y. Hwang, H. N. Lee, and K. Myung-Whun, Room-temperature optical anisotropy of a LaMnO3 thin film induced by ultra-short pulse laserAppl. Phys. Lett106, 092907 (2015).

2014

S. Lee, T. Meyer, S. Park, T. Egami, and H. N. Lee, Growth control of the oxidation state in vanadium oxide thin filmsAppl. Phys. Lett. 105, 223515 (2014).

Mitra, T. Meyer, H. N. Lee, and F. A. Reboredo, Oxygen diffusion pathways in brownmillerite SrCoO2.5: Influence of structure and chemical potentialJ. Chem. Phys. 141, 084710 (2014).

W. Choi, H. Ohta, and H. N. Lee, Thermopower enhancement by fractional layer control in 2D oxide superlatticesAdv. Mater26, 6701 (2014).

V. R. Cooper, S. S. A. Seo, S. Lee, J. S. Kim, W S. Choi, S. Okamoto, and H. N. Lee, Transparent conducting oxides: A delta-doped superlattice approachNature: Sci. Rep. 4, 6021 (2014).

W. Jeong, W. S. Choi, S. Okamoto, J.–Y. Kim, K. W. Kim, S. J. Moon, D.-Y. Cho, H. N. Lee, and T. W. Noh,Dimensionality control of d-orbital occupation in oxide superlatticesNature: Sci. Rep. 4, 6124 (2014).

Sun, M. Fang, X. Xu, L. Jiang, H. Guo, Y. Wang, W. Yang, L. Yin, P. C. Snijders, T. Z. Ward, Z. Gai, X.-G. Zhang, H. N. Lee, and J. Shen, Active control of magnetoresistance of organic spin valves using ferroelectricityNature Commun5, 4396 (2014).

J.-H. Kwon, W. S. Choi, Y.-K. Kwon, R. Jung, J.-M. Zuo, H. N. Lee, and M. Kim, Nanoscale spin‑state ordering in LaCoO3 epitaxial thin filmsChem. Mater. 26, 2496 (2014). 

T. T. Fister, H. Zhou, Z. Luo, S. S. A. Seo, S. O. Hruszkewycz, D. L. Proffit, J. A. Eastman, P. H. Fuoss, P. M. Baldo, H. N. Lee, and D. D. Fong, Octahedral rotations in strained LaAlO3/SrTiO3 (001) heterostructuresAPL Mater. 2, 021102 (2014).

C. Mitra, R. S. Fishman, S. Okamoto, H. N. Lee, and F. A. Reboredo, Ground-state and spin-wave dynamics in brownmillerite SrCoO2.5 – A Combined hybrid functional and LSDA + U studyJ. Phys.: Condens. Matter 26, 036004 (2014). 

2013

L. JiangW. S. ChoiH. JeenS. DongY. S. KimM. G. Han, Y. Zhu, S. V. Kalinin, E. DagottoT. Egamiand H. N. Lee, Tunneling electroresistance induced by interfacial phase transitions in ultrathin oxide heterostructures, Nano Lett13, 5837 (2013).

J. K. Lee, G. Y. Shin, K. Song, W. S. Choi, Y. A. Shin, S. Y. Park, J. Britson, Y. Cao, L.-Q. Chen, H. N. Lee, and S. H. Oh, Direct observation of asymmetric domain wall motion in a ferroelectric capacitorActa Materialia 61, 6765 (2013).

W. S. Choi, H. Jeen, J. H. Lee, S. S. A. Seo, V. R. Cooper, K. M. Rabe, and H. N. Lee, Reversal of the lattice structure in SrCoOx epitaxial thin films studied by real-time optical spectroscopy and first-principles calculationsPhys. Rev. Lett111, 097401 (2013).

H. Jeen, Z. Bi, W. S. Choi, M. F. Chisholm, C. A. Bridges, M. P. Paranthaman, and H. N. Lee, Orienting oxygen vacancies for fast catalytic reactionAdv. Mater. 26, 6459 (2013).

H. Jeen, W. S. Choi, M. D. Biegalski, I. C. Tung, J. W. Freeland, D. Shin, H. Ohta, M. F. Chisholm, and H. N. Lee, Reversible redox reactions in an epitaxially stabilized SrCoOx oxygen spongeNature Mater. 12, 1057 (2013).

W. Wang, J. Zhao, W. Wang, Z. Gai, N. Balke, M. Chi, H. N. Lee, W. Tian, L. Zhu, X. Cheng, D. J. Keavney, J. Yi, T. Z. Ward, P. C. Snijders, H. M. Christen, W. Wu, J. Shen, and X. Xu, Room-temperature multiferroics hexagonal LuFeO3filmsPhys. Rev. Lett. 110, 237601 (2013).

H. Jeen, W. S. Choi, J. W. Freeland, H. Ohta, C. U. Jung, and H. N. Lee, Topotactic phase transformation of the brownmillerite SrCoO2.5 to the perovskite SrCoO3-δAdv. Mater25, 3651 (2013).

J. Park, B.-G. Cho, K. D. Kim, J. Koo, H. Jang, K.-T. Ko, J.-H. Park, K.-B. Lee, J.-Y. Kim, D. R. Lee, C. A. Burns, S. S. A. Seo, and H. N. Lee, Oxygen vacancy-induced orbital reconstruction of Ti ions at the interface of LaAlO3/SrTiO3heterostructures: A resonant soft x-ray scattering studyPhys. Rev. Lett. 110, 017401 (2013).

2012

W. S. Choi, C. M. Rouleau, S. S. A. Seo, Z. Luo, H. Zhou, T. T. Fister, J. A. Eastman, P. H. Fuoss, D. D. Fong, J. Z. Tischler, G. Eres, and H. N. Lee, Atomic layer engineering of perovskite oxides for chemically sharp heterointerfacesAdv. Mater. 24, 6423 (2012).

T. Choi, L. Jiang, S. Lee, T. Egami, and H. N. Lee, High rectification and photovoltaic effect in oxide nanojunctionsNew J. Phys14, 093056 (2012).

W. S. Choi, J.-H. Kwon, H. Jeen, J. E. Hamann-Borrero, A. Radi, S. Macke, R. Sutarto, F. He, G. A. Sawatzky, V. Hinkov, M. Kim, and H. N. Lee, Strain-induced spin states in atomically ordered cobaltites, Nano Lett. 12, 4966 (2012).

W. S. Choi, S. Lee, V. Cooper, and H. N. Lee, Fractionally δ-doped oxide superlattices for higher carrier mobilitiesNano Lett. 12, 4590 (2012).

L. Jiang, W. S. Choi, H. Jeen, T. Egami, and H. N. Lee, Strongly coupled phase transition in ferroelectric/correlated electron oxide heterostructuresAppl. Phys. Lett. 101, 042902 (2012).

W. S. Choi and H. N. Lee, Band gap tuning in ferroelectric Bi4Ti3O12 by alloying with LaTMO3 (TM = Ti, V, Cr, Mn, Co, Ni, and Al)Appl. Phys. Lett100, 132903 (2012).

W. S. Choi, M. F. Chisholm, D. J. Singh, T. Choi, G. E. Jellison, and H. N. Lee, Wide band gap tunability in complex transition metal oxides by site-specific substitutionNature Comm. 3, 689 (2012).

Lee, S. M. Yang, T. H. Kim, B. C. Jeon, Y. S. Kim, J.-G. Yoon, H. N. Lee, S. H. Baek, C. B. Eom, and T. W. Noh, Multilevel data storage memory using deterministic polarization controlAdv. Mater24, 402 (2012).

P. Chen, J. Y. Jo, H. N. Lee, E. M. Dufresne, S. M. Nakhmanson, and P. G. Evans, Domain and symmetry transition origins of reduced nanosecond piezoelectricity in ferroelectric/dielectric superlatticesNew J. Phys14, 013034 (2012).

2011

S. H. Lee, X.- G. Zhang, C. M. Parish, H. N. Lee, D. B. Smith, Y. He, and J. Xu, Nanocone tip–film solar cells with efficient charge transportAdv. Mater23, 4381 (2011).

N. M. Murari, S. Hong, H. N. Lee, and R. S. Katiyar, Direct observation of fatigue in epitaxially grown Pb(Zr,Ti)O3 thin films using second harmonic piezoresponse force microscopyAppl. Phys. Lett. 99, 052904 (2011).

P. Yordanov, A. V. Boris, J. W. Freeland, J. Chakhalian, H. N. Lee, and B. Keimer, Far-infrared and dc-magnetotransport of CaMnO3-CaRuO3 superlatticesPhys. Rev. B 84, 045108 (2011).

W. S. Choi, D. W. Jeong, S. S. A. Seo, Y. S. Lee, T. H. Kim, S. Y. Jang, H. N. Lee, and K. Myung-Whun, Charge states and magnetic ordering in LaMnO3/SrTiO3 superlatticesPhys. Rev. B 83, 195113 (2011).

S. M. Yang, S. Y. Jang, T. H. Kim, H. H. Kim, H. N. Lee, J.-G. Yoon, Scaling behavior of amplitude-dependent ferroelectric hysteresis loops in an epitaxial PbZr0.2Ti0.8O3 thin film, J. Kor. Phys. Soc. 58, 599 (2011).

W. S. Choi, D. W. Jeong, S. Y. Jang, Z. Marton, S. S. A. Seo, H. N. Lee, and Y. S. Lee, LaMnO3 thin films grown by using pulsed laser deposition and their simple recovery to a stoichiometric phase by annealingJ. Kor. Phys. Soc58, 569 (2011).

H. Ko, K. Ryu, H. Park, C. Park, D. Heon, Y. K. Kim, J. Jung, D.-K. Min, Y. Kim, H. N. Lee, Y. Park, H. Shin, and S. Hong, High-resolution field effect sensing of ferroelectric chargesNano Lett. 11, 1428 (2011).

<2010

S. M. Yang, J. Y. Jo, T. H. Kim, J.-G. Yoon, T. K. Song, H. N. Lee, Z. Marton, S. Park, Y. Jo, and T. W. Noh, acdynamics of ferroelectric domains from an investigation of the frequency dependence of hysteresis loops, Phys. Rev. B 82, 174125 (2010).
J. S. Kim, S. S. A. Seo, R. K. Kremer, H.-U. Habermeier, B. Keimer, and H. N. Lee, Nonlinear Hall effect and multichannel conduction in LaTiO3/SrTiO3 superlattices, Phys. Rev. B 82, 201407(R) (2010).
M. F. Chisholm, W. Luo, M. P. Oxley, S. Pantelides, and H. N. Lee, Atomic-scale compensation phenomena at polar interfaces, Phys. Rev. Lett105, 197602 (2010).
D. J. Singh, S. S. A. Seo, and H. N. Lee, Optical properties of ferroelectric Bi4Ti3O12Phys. Rev. B 82, 180103(R) (2010).

J. Y. Jo, R. J. Sichel, E. M. Dufresne, H. N. Lee, S. M. Nakhmanson, and P. G. Evans, Component-specific electromechanical response in a ferroelectric/dielectric superlattice, Phys. Rev. B 82, 174116 (2010).
Z. Marton, S. S. A. Seo, T. Egami, and H. N. Lee, Growth control of oxygen stoichiometry in LaMnO3 epitaxial thin films by pulsed laser deposition, J. Cryst. Growth 312, 2923 (2010).
B. Gray, H. N. Lee, J. Liu, J. Chakhalian, and J. W. Freeland, Local electronic and magnetic studies of an artificial La2CrFeO6 double perovskite, Appl. Phys. Lett97, 013105 (2010).
J. Y. Jo, R. J. Sichel, H. N. Lee, S. M. Nakhmanson, E. M. Dufresne, and P. G. Evans, Piezoelectricity in the dielectric component of nanoscale dielectric-ferroelectric superlattices, Phys. Rev. Lett. 104, 207601 (2010).
J.W. Freeland, J. Chakhalian, A.V. Boris, J.-M. Tonnerre, J.J. Kavich, P. Yordanov, S. Grenier, P. Popovich, H.N. Lee, B. Keimer, Charge transport and magnetization profile at the interface between the correlated metal CaRuO3 and the antiferromagnetic insulator CaMnO3Phys. Rev. B 81, 094414 (2010).
S. S. A. Seo, Z. Marton, W. S. Choi, G. W. Hassink, D. H. A. Blank, H. Y. Hwang, T. W. Noh, T. Egami, and H. N. Lee, Multiple conducting carriers generated in LaAlO3/SrTiO3 heterostructures, Appl. Phys. Lett. 95, 082107 (2009).
S. M. Yang, J. W. Heo, H. N. Lee, T. K. Song, and J.-G. Yoon, Quantitative analysis of the nucleation and growth of ferroelectric domains in epitaxial Pb(Zr,Ti)O3 thin films, J. Kor. Phys. Soc55, 820 (2009).
S. S. A. Seo and H. N. Lee, Strain-coupled ferroelectric polarization in BaTiO3-CaTiO3 superlattices, Appl. Phys. Lett.94, 232904 (2009).
W. S. Choi, Z. Marton, S. Y. Jang, S. J. Moon, B. C. Jeon, J. H. Shin, S. S. A. Seo, T. W. Noh, K. Myung-Whun, H. N. Lee, and Y. S. Lee, Effects of oxygen-reducing atmosphere annealing on LaMnO3 epitaxial thin films, J. Phys. D: Appl. Phys42, 165401 (2009).
A. Grigoriev, R. J. Sichel, J. Y. Jo, S. Choudhury, L.-Q. Chen, D. Morgan, H. N. Lee, E. C. Landahl, B. W. Adams, E. M. Dufresne, and P. G. Evans, Stability of the unswitched ferroelectric polarization state of ultrathin epitaxial Pb(Zr,Ti)O3 in large electric fields, Phys. Rev. B 80, 014110 (2009).
J. Y. Jo, S. M. Yang, T. H. Kim, H. N. Lee, J.-G. Yoon, S. Park, Y. Jo, M. H. Jung, and T. W. Noh, Nonlinear dynamics of domain-wall propagation in epitaxial ferroelectric thin films, Phys. Rev. Lett102, 045701 (2009).
D. A. Tenne, H. N. Lee, R. S. Katiyar, and X. X. Xi, Ferroelectric phase transitions in three-component short-period superlattices studied by ultraviolet Raman spectroscopy, J. Appl. Phys. 105, 054106 (2009).
M. F. Chisholm, H. N. Lee, W. Luo, and S. T. Pantelides, Simultaneous Z-contrast/phase contrast imaging of ferroelectric thin films, Microscopy and Microanalysis15, 1464 (2009).
S. M. Yang, J. Y. Jo, D. J. Kim, H. Sung, T. W. Noh, H. N. Lee, J.-G. Yoon, and T. K. Song, Domain wall motion in epitaxial Pb(Zr,Ti)O3 capacitors investigated by modified piezoresponse force microscopy, Appl. Phys. Lett92, 252901 (2008).
A. Grigoriev, R. Sichel, H. N. Lee, E. C. Landahl, B. Adams, E. M. Dufresne, and P. G. Evans, Non-linear piezoelectricity in epitaxial ferroelectrics at high electric fieldsPhys. Rev. Lett100, 027604 (2008).
D. H. Kim, H. N. Lee, M. D. Biegalski, and H. M. Christen, Effect of epitaxial strain on ferroelectric polarization in multiferroic BiFeO3 films, Appl. Phys. Lett. 92, 012911 (2008).
S. S. A. Seo, W. S. Choi, H. N. Lee, L. Yu, K. W. Kim, C. Bernhard, and T. W. Noh, Optical study of the free carrier response of LaTiO3/SrTiO3 superlattices, Phys. Rev. Lett99, 266801 (2007).
S. S. A. Seo, J. H. Lee, H. N. Lee, M. F. Chisholm, W. S. Choi, D. J. Kim, J. Y. Jo, H. Kim, J. Yu, and T. W. Noh, Ferroelectricity in artificial bicolor oxide superlattices, Adv. Mater. 19, 2460 (2007).
E. Jellison, Jr., J. D. Hunn, and H. N. Lee, Measurement of the optical functions of highly oriented pyrolytic graphite (HOPG) in the visible, Phys. Rev. B 76, 085125 (2007).
M. Yoon, H. N. Lee, W. Hong, H. M. Christen, Z. Zhang, and Z. Suo, Dynamics of step bunching in heteroepitaxial growth on vicinal substrates, Phys. Rev. Lett. 99, 055503 (2007).
D. H. Kim, H. N. Lee, M. D. Biegalski, and H. M. Christen, Large ferroelectric polarization in antiferromagnetic BiFe0.5Cr0.5O3 epitaxial films, Appl. Phys. Lett. 91, 042906 (2007).
H. N. Lee, S. M. Nakhmanson, M. F. Chisholm, H. M. Christen, K. M. Rabe, and D. Vanderbilt, Suppressed dependence of polarization on epitaxial strain in highly polar ferroelectricsPhys. Rev. Lett. 98, 217602 (2007).
D. H. Kim, H. N. Lee, M. Varela, and H. M. Christen, Antiferroelectricity in multiferroic BiCrO3 epitaxial films, Appl. Phys. Lett, 89, 162904 (2006).
S. K. Lee, D. Hesse, U. Goesele, and H. N. Lee, Influence of miscut Y2O3-stabilized ZrO2 substrates on the azimuthal domain structure and ferroelectric properties of epitaxial La-substituted Bi4Ti3O12 films, J. Appl. Phys. 100, 64101 (2006).
S. V. Kalinin, S. Jesse, B. J. Rodriguez, J. Shin, A. P. Baddorf, H. N. Lee, A. Borisevich, S. J. Pennycook, Spatial resolution, information limit, and contrast transfer in piezoresponse force microscopy, Nanotechnology 17, 3400 (2006).
S. Jesse, H. N. Lee, and S. Kalinin, Quantitative mapping of switching behavior in piezoresponse force microscopy, Rev. Sci. Inst77, 73702 (2006).
D. H. Kim, H. M. Christen, M. Varela, H. N. Lee, and D. H. LowndesEffect of strain on structure and charge order transitions in epitaxial Bi0.4Ca0.6MnO3 films on perovskite (001) and (011) substrates, Appl. Phys. Lett. 88, 202503 (2006).
W. Hong, H. N. Lee, M. Yoon, H. M. Christen, D. H. Lowndes, Z. Suo, and Z. Zhang, Persistent step-flow growth of strained films on vicinal substratesPhys. Rev. Lett. 95, 095501 (2005)
H. N. Lee, H. M. Christen, M. F. Chisholm, C. M. Rouleau, and D. H. Lowndes, Strong polarization enhancement in asymmetric three-component ferroelectric superlattices, Nature433, 395 (2005).
X. Zhu, S. K. Lee, H. N. Lee, and D. Hesse, Microstructure of (110)-oriented epitaxial SrRuO3 thin films grown on off-cut single crystal YSZ(100) substrates, Mater. Sci. Eng. B 118, 60 (2005).
S. K. Lee, D. Hesse, U. Goesele, and H. N. Lee, Reducing azimuthal domains in epitaxial ferroelectric lanthanum-substituted bismuth titanate films using miscut yttria-stabilized zirconia substrates, Appl. Phys. Lett. 86, 142903 (2005).
Shin, S. V. Kalinin, H. N. Lee, H. M. Christen, R. G. Moore, E. W. Plummer, and A. P. Baddorf, Surface stability of epitaxial SrRuO3 films, Surf. Sci. 581, 118 (2005).
S. S. A. Seo, H. N. Lee, and T. W. Noh, Infrared spectroscopy of CaTiO3, SrTiO3, BaTiO3, Ba0.5Sr0.5TiO3 thin films, and (BaTiO3)5/(SrTiO3)5 superlattice grown on SrRuO3/SrTiO3(001) substratesThin Solid Films 486, 94 (2005).
Shin, S. V. Kalinin, H. N. Lee, H. M. Christen, R. G. Moore, E. W. Plummer, and A. P. Baddorf, Surface stability of epitaxial SrRuO3 thin films in vacuum, J. Mater. Res19, 3447 (2004).
S. K. Lee, H. N. Lee, X. H. Zhu, D. Hesse, and U. Goesele, Reducing azimuthal domains in (100)- or (118)-oriented ferroelectric Bi3.25La0.75Ti3O12 films using off-cut single crystal substrates, Integrated Ferroelectrics68, 179 (2004).
H. N. Lee, H. M. Christen, M. F. Chisholm, C. M. Rouleau, and D. H. Lowndes, Thermal stability of epitaxial SrRuO3films as a function of oxygen pressure, Appl. Phys. Lett. 84, 4107 (2004).
H. M. Christen, C. M. Rouleau, I. Ohkubo, H. Y. Zhai, H. N. Lee, S. Sathyamurthy, and D. H. Lowndes, An improved continuous compositional-spread technique based on pulsed laser deposition and applicable to large substrate areasRev. Sci. Instrum74, 4058 (2003).
H. N. Lee, D. Hesse, N. Zakharov, S. K. Lee, and U. Gösele, Growth of uniformly a-axis-oriented ferroelectric lanthanum-substituted bismuth titanate films on silicon substrates, J. Appl. Phys. 93, 5592 (2003).
D. Hesse, H. N. Lee, and N. D. Zakharov, Comparing crystallography and ferroelectric properties of a-axis oriented Bi3.25La0.75Ti3O12 versus non-c-axis oriented SrBi2Ta2O9 thin films on Si(100), Ferroelectrics288, 287-301 (2003).
H. N. Lee, D. Hesse, N. Zakharov, and U. Gösele, Ferroelectric Bi3.25La0.75Ti3O12 films of uniform a-axis orientation on silicon substratesScience 296, 2006 (2002).
A. Visinoiu, M. Alexe, H. N. Lee, D. N. Zakharov, A. Pignolet, D. Hesse, and U. Gösele, Initial growth stages of epitaxial BaTiO3 thin films on vicinal SrTiO3 substrate surfaces, J. Appl. Phys91, 10157 (2002).
H. N. Lee and D. Hesse, Anisotropic ferroelectric properties of epitaxially twinned Bi3.25La0.75Ti3O12 thin films grown with three different orientations, Appl. Phys. Lett. 80, 1040 (2002).
H. N. Lee, D. Zakharov, S. Senz, A. Pignolet, and D. Hesse, Growth and characterization of non-c-axis-oriented SrBi2Ta2O9 epitaxial thin films on Si(100) substrates with SrRuObottom electrodes, Integrated Ferroelectrics 39, 1023 (2001).
A. Pignolet, C. Harnagea, H. N. Lee, A. Visinoiu, S. Senz, and D. Hesse, Ferroelectricity in epitaxial pulsed laser deposited bismuth-layered perovskite thin films of different crystallographic orientations, Ferroelectrics 258, 197 (2001).
H. N. Lee, D. N. Zakharov, S. Senz, A. Pignolet, and D. Hesse, Epitaxial growth of ferroelectric SrBi2Ta2O9 thin films of mixed (100) and (116) orientation on SrLaGaO4(110), Appl. Phys. Lett. 79, 2961 (2001).
H. N. Lee, S. Senz, A. Pignolet, and D. Hesse, Epitaxial growth of non-c-oriented ferroelectric SrBi2Ta2O9 thin films on SrTiO3 substrates, J. Europ. Ceram. Soc21, 1565 (2001).
H. N. Lee, S. Senz, A. Pignolet, D. Hesse, and U. Gösele, Epitaxial growth of (103)-oriented ferroelectric SrBi2Ta2O9thin films on Si(100), Appl. Phys. Lett78, 2922 (2001).
W. S. Kim, J. W. Kim, H. H. Park, and H. N. Lee, Fabrication and characterization of Pt-oxide electrode for ferroelectric random access memory application, Jpn. J. App. Phys. 39, 7097 (2000).
H. N. Lee, S. Senz, C. Harnagea, A. Pignolet, D. Hesse, and U. Gösele, Growth and characterization of non-c-oriented epitaxial ferroelectric SrBi2Ta2O9 films on buffered Si(100), Appl. Phys. Lett77, 3260 (2000).
H. N. Lee, A. Visinoiu, S. Senz, C. Harnagea, A. Pignolet, D. Hesse, and U. Gösele, Structural and electrical anisotropy of (001)-, (116)-, and (103)-oriented epitaxial SrBi2Ta2O9 thin films on SrTiO3 substrates grown by pulsed laser deposition, J. Appl. Phys88, 6658 (2000).
H. N. Lee, S. Senz, A. Visinoiu, A. Pignolet, D. Hesse, and U. Gösele, Epitaxial growth of non-c-oriented ferroelectric SrBi2Ta2O9 thin films on Si(100) substrates, Appl. Phys. A 71, 101 (2000).
H. N. Lee, Y. T. Kim, and S. H. Choh, Comparison of memory effect between YMnO3 and SrBi2Ta2O9 ferroelectric thin films deposited on Si substrates, Appl. Phys. Lett76, 1066 (2000).
H. N. Lee, I. S. Kim, Y. T. Kim, S. H. Choh, W. S. Kim, and H. H. Park, Ferroelectric Switching Properties of Highly c-Axis Oriented YMnO3 Gate Capacitors, J. Korean Phys. Soc. 35, S1260 (1999).
H. N. Lee, Y. T. Kim, and Young K. Park, Memory window of highly c-axis oriented ferroelectric YMnO3 thin films deposited on Y2O3/Si, Appl. Phys. Lett. 74, 3887 (1999).
H. N. Lee, S. H. Choh, D. S. Shin, and Y. T. Kim, Correlation between morphological and electrical characteristics of Pt/SrBi2Ta2O9/CeO2/Si capacitors, Ferroelectrics 232, 135 (1999).
H. N. Lee, Y. T. Kim, and S. H. Choh, Characteristics of Pt/SrBi2Ta2O9/Y2O3/Si ferroelectric gate capacitors, J. Korean Phys. Soc34, 454 (1999).
H. N. Lee, M.-H. Lim, Y. T. Kim, T. S. Kalkur, and S. H. Choh, Characteristics of metal/ferroelectric/insulator/semiconductor field effect transistors using a Pt/SrBi2Ta2O9/Y2O3/Si structure, Jpn. J. Appl. Phys. Part 1, 37 (3B), 1107 (1998).

 

Submitted

 D. S. Gyan, H. J. Lee, Y. Ahn, J. Carnis, S. Labat, T. Kim, S. Unithrattil, S. H. Chun, S. Kim, I. Eom, S.-Y. Park, K. S. Kim, H. N. Lee, J. Y. Jo, and P. G. Evans, Optically induced picosecond lattice compression in the dielectric layer of a strongly coupled ferroelectric/dielectric superlattice, submitted.

H. Miao, H. X. Li, W. R. Meier, ….Geometry of the charge density wave in the kagome metal AV3Sb5, submitted.

H. Li, N. Mohanta, W. R. Meier, T. Yilmaz, K. Kaznatcheev, E. Vescovo, X. Wang, M.-H. Du, S. Okamoto, B. C. Sales, R. G. Moore, H. N. Lee, and H. Miao. Electronic structure of strong spin-orbit coupled kagome metal PtTl, Physical Review Research (submitted).

 J. Zhang, T. Yilmaz, W. Meier, Y. Pai, J. Lapano, H. X. Li, K. Kaznatcheev, E. Vescovo, A. Huon, M. Brahlek, T. Z. Ward, B. Lawrie, R. G. Moore, H. N. Lee, Y. L. Wang, H. Miao, and B. Sales, Flat band induced negative magnetoresistance in multi-orbital kagome metal (submitted).

C. Sohn, S. Okamoto, E. Skoropata, Y. Choi, A. Huon, G. Fabbris, J. Son, S. Y. Kim, D. Lee, J. M. Ok, A. Rastogi, H. Huang, S. J. Lee, J. S. Lee, T. W. Noh, J. W. Freeland, D. Haskel, E.-G. Moon, and H. N. Lee, Two-dimensional ferromagnetic Mott state in 3d-5d double perovskite heterostructures, (submitted).

Accepted

2021

J. M. Ok, N. Mohanta, J. Zhang, S. Yoon, S. Okamoto, E. S. Choi, H. Zhou, M. Briggeman, P. Irvin, A. R. Lupini, Y.-Y. Pai, E. Skoropata, C. Sohn, H. Li, H. Miao, B. Lawrie, W. S. Choi, G. Eres, J. Levy, and H. N. Lee, Correlated oxide Dirac semimetal in the extreme quantum limit, Sci. Adv. 7, eabf9631 (2021). 

 J. LapanoO. DyckA. R. LupiniW. KoH. LiH. MiaoH. N. LeeA.-P LiM. BrahlekS. Jesse, and R. G. Moore, van der Waals epitaxy growth of Bi2Se3 on a freestanding monolayer graphene membrane: Implications for layered materials and heterostructures, ACS Appl. Nano Mater4, 7607 (2021). 

A. Huon, S. Yoon, M. R. Fitzsimmons, T., R. Charlton, J. M. Ok, C. dela Cruz, and H. N. LeeEffects of Sn substitution in SrRuO3 epitaxial films, Appl. Phys. Lett. 119, 112404 (2021).

 

 J. M. Ok, S. Yoon, A. R. Lupini, P. Ganesh, A. Huon, M. F. Chisholm, and H. N. LeeTwin-domain formation in epitaxial triangular lattice delafossites, ACS Appl. Mater. Interfaces, 13, 22059 (2021).

 

H. Li, T. T. Zhang, T. Yilmaz, Y.-Y. Pai, C. Marvinney, A. Said, Q. W. Yin, C. S. Gong, Z. J. Tu, E. Vescovo, C. S. Nelson, R. G. Moore, S. Murakami, H. C. Lei, H. N. Lee, B. Lawrie, and H. Miao, Observation of unconventional charge density wave without acoustic phonon anomaly in kagome superconductors AV3Sb5 (A=Rb, Cs), Phys. Rev. X 11, 031050 (2021).

H. Li, T. Zhang, A. Said, Y. Fu, G. Fabbris, D. G. Mazzone, J. Zhang, J. Lapano, H. N. Lee, H. C. Lei, M. P. M. Dean, S. Murakami, and H. Miao, Observation of a Chiral Wave Function in Twofold Degenerate Quadruple Weyl System BaPtGe, Phys. Rev. B 103, 184301 (2021). https://arxiv.org/abs/2010.00764

H. Li, T. T. Zhang, A. Said, G. Fabbris, D. G. Mazzone, J. K. Keum, J. Q. Yan, D. Mandrus, S. Murakami, G. Halasz, S. Okamoto, M. P. M. Dean, H. N. Lee, and H. Miao, Giant phonon anomalies in the proximate Kitaev quantum spin liquid α-RuCl3, Nat. Commun. 12, 3513 (2021).

C. Sohn, X. Gao, R. K. Vasudevan, S. M. Neumayer, N. Balke, J. M. Ok, D. Lee, E. Skoropata, H. Y. Jeong, Y.-M. Kim, and H. N. Lee, Strain-driven autonomous control of cation distribution for artificial ferroelectrics, Sci. Adv. 7, eabd7394 (2021).

S. Yoon, X. Gao, J. M. Ok, Z. Liao, M.-G. Han, Y. Zhu, P. Ganesh, M. F. Chisholm, W. S. Choi, H. N. Lee, Strain-induced atomic-scale building blocks for ferromagnetism in epitaxial LaCoO3, Nano Lett. (2021).
 

S. Yoon, J. M. Ok, S. A. Lee, J. Lee, A. Huon, A. R. Lupini, W. S. Choi, and H. N. Lee, Atomic structure of the initial nucleation layer in hexagonal perovskite BaRuO3 thin films, Adv. Mater. Interfaces 2100023 (2021).

E. Skoropata, A. Mazza, A. Herklotz, J. M. Ok, G. Eres, M. Brahlek, T. R. Charlton, H. N. Lee, and T. Z. Ward, Post-synthesis control of Berry phase driven magnetotransport in SrRuO3 films, Phys. Rev. B 103, 085121 (2021).

H. Miao, Y. L. Wang, J.-X. Yin, J. Zhang, S. Zhang, M. Z. Hasan, R. Yang, X. C. Wang, C. Q. Jin, T. Qian, H. Ding, H. N. Lee, and G. Kotliar, Hund’s superconductor Li(Fe,Co)As,  Phys. Rev. B 103, 054503 (2021).

2020

 J. Lapano, L. Nuckols, A. R. Mazza, Y. Y. Pai, J. Zhang, B. Lawrie, R. G. Moore, G. Eres, H. N. Lee, M.-H. Du, T. Z. Ward, J. S. Lee, W. J. Weber, Y. Zhang, and M. Brahlek, Adsorption-controlled growth of MnTe(Bi2Te3)n by molecular beam epitaxy exhibiting stoichiometry-controlled magnetismPhys. Rev. Mater4, 111201 (2020). 

 J. Lapano, A. R. Mazza, H. Li, D. Mukherjee, E. M. Skoropata, J. M. Ok, H. Miao, R. G. Moore, T. Z. Ward, G. Eres, H. N. Lee, M. BrahlekStrong spin-dephasing in a topological insulator- paramagnet heterostructureAPL Mater. 8, 091113 (2020). 

Q. Lu, C. Sohn, G. Hu, X. Gao, M. F. Chisholm, I. Kylanpaa, J. T. Krogel, P. R. C. Kent, O. Heinonen, and H. N. Lee, Metal-insulator transition tuned by oxygen vacancy migration across VO2/TiO2 interface, Sci. Rep. 10, 18554 (2020).

(Editor’s suggestion) D. Nevola, H. X. Li, J.-Q. Yan, R. G. Moore, H. N. Lee, H. Miao, and P. D. Johnson, Coexistence of surface ferromagnetism and gapless topological state in MnBi2Te4, Phys. Rev. Lett. 125, 117205 (2020). Featured in Physics: An Intrinsically Magnetic Topological Insulator

S. Lee, X. Gao, C. Sohn, Y. Ha, S. Yoon, J. M. Ok, M. F. Chisholm, T. W. Noh, and H. N. Lee, Templated epitaxy of TiO2(B) on a perovskite, Appl. Phys. Lett. 117, 133903 (2020).

G. Eres, S. Lee, J. Nichols, C. Sohn, J. M. Ok, A. Mazza, C. Liu, G. Duscher, H. N. Lee, D. E. McNally, X. Lu, M. Radovic, and T. Schmitt, Versatile tunability of the metal insulator transition in (TiO2)m/(VO2)m superlattices, Adv. Funct. Mater. 2004914 (2020).

J. M. Ok, S. Yoon, A. Lupini, P. Ganesh, M. F. Chisholm, and H. N. Lee, Intermixing-assisted formation of a CuAl1-xCrxO2 buffer layer for epitaxy of delafossites, Sci. Rep. 10, 11375 (2020).

E. Skoropata, J. Nichols, J. M. Ok, R. V. Chopdekar, E. S. Choi, A. Rastogi, C. Sohn, X. Gao, S. Yoon, T. Farmer, R. D. Desautels, Y. Choi, D. Haskel, J. W. Freeland, S. Okamoto, M. Brahlek, and H. N. Lee, Interfacial tuning of chiral magnetic interactions for large topological Hall effects in LaMnO3/SrIrO3 heterostructures, Science Adv. 6, eaaz3902 (2020).
 
J. M. Ok, M. Brahlek, W. S. Cho, K. M. Roccapriore, M. F. Chisholm, S. Kim, C. Sohn, E. Skoropata, S. Yoon, J. S. Kim, and H. N. Lee, Pulsed-laser epitaxy of metallic delafossite PdCrO2 filmsAPL Mater. 8, 051104 (2020).

M. Fang, Y. Wang, H. Wang, E. Vetter, Y. Kou, W. Yang, L. Yin, Z. Xiao, Z. Li, L. Jiang, H. N. Lee, Z. Shufeng, R. Wu, D. Sun, X. Xu, and J. Shen, Tuning the interfacial spin-orbit coupling with ferroelectricity, Nature Commun. 11, 2627 (2020).

F. Wrobel, H. Park, C. Sohn, H.-W. Hsiao, J.-M. Zuo, H. Shin, H. N. Lee, P. Ganesh, J. T. Krogel, A. Berali, P. R. C. Kent, O. Heinonen, A. Bhattacharya, Doped NiO: The Mottness of a charge transfer insulator

Phys. Rev. B 101, 195128 (2020).

L. Fan, X, Gao, T. O. Farmer, D. Lee, E. J. Guo, S. Mu, K. Wang, M. R. Fitzsimmons, M. F. Chisholm, T. Z. Ward, G. Eres, and H. N. Lee, Vertically aligned single-crystalline CoFe2O4 nanobrush architectures with high magnetization and tailored magnetic anisotropyNanomaterials, 10, 472 (2020).

D. Lee, X. Gao, L. Sun, Y. Jee, J. Poplawsky, T. O. Farmer, L. Fan, E.-J. Guo, Q. Lu, W. T. Heller, Y. Choi, D. Haskel, M. R. Fitzsimmons, M. F. Chisholm, K. Huang, B. Yildiz, and H. N. Lee, Colossal oxygen vacancy formation at a fluorite-bixbyite interfaceNature Commun. 11, 1371 (2020).
 

Y. Zhang, M. Kim, J. Mravlje, C. Sohn, Y. Choi, J. Strempfer, Y. Hotta, A. Yasui, J. Nichols, H. N. Lee, and H. WadatiPhotoemission and dynamical mean field theory study of electronic correlations in a t2g metal SrRhO3 thin film, Phys. Rev. B 101, 085134 (2020).

K. P. Kelley, D. E. Yilmaz, L. Collins, Y. Sharma, H. N. Lee, D. Akbarian, A.C.T. van Duin, P. Ganesh, and R. K. VasudevanThickness and strain dependence of piezoelectric coefficient in BaTiO3 thin filmsPhys. Rev. Mater. 4, 024407 (2020).

2019

Y. Sharma, R. Agarwal, L. Collins, Q. Zheng, A. V. Ievlev, R. P. Hermann, V. R. Cooper, S. KC, I. N. Ivanov, R. S. Katiyar, S. V. Kalinin, H. N. Lee, S. Hong, and T. Z. Ward, Self‐Assembled Room Temperature Multiferroic BiFeO3‐LiFe5ONanocompositesAdv. Funct. Mater. 30(3), 1906849 (2019).

K. Saritas, J. T. Krogel, S. Okamoto, H. N. Lee, and F. A. Reboredo, Structural, electronic, and magnetic properties of bulk and epitaxial LaCoO3 through diffusion Monte Carlo, Phys. Rev. Mater. 3, 124414 (2019). 

M. Fang, S. Zhang, W. Zhang, L. Jiang, E. Vetter, H. N. Lee, X. Xu, D. Sun, and J. Shen, Nonvolatile multilevel states in multiferroic tunnel junctionsPhys. Rev. Appl. 12, 044049 (2019).

[Editor’s pick article] A. Rastogi, M. Brahlek, J. M. Ok, Z. Liao, C. Sohn, S. Feldman, and H. N. Lee, Metal-insulator transition in (111) SrRuO3 ultrathin filmsAPL Mater. 7, 091106 (2019). 

G. Eres, C. M. Rouleau, Q. Lu, Z. Zhang, E. Benda, H. N. Lee, J. Z. Tischler, and D. D. FongExperimental setup combining in situ hard X-ray photoelectron spectroscopy and real-time surface X-ray diffraction for characterizing atomic and electronic structure evolution during complex oxide heterostructure growthRev. Sci. Instrum90, 093902 (2019).

M. Brahlek, G. Rimal, J. M. Ok, D. Mukherjee, A. Mazza, Q. Lu, H. N. Lee, T. Z. Ward, R. R. Unocic. G. Eres, S. Oh, Growth of metallic delafossite PdCoO2 by molecular beam epitaxyPhys. Rev. Mater. 3, 093401 (2019). 

Y. Sharma, M. V. Holt, N. Laanait, X. Gao, I. Ivanov, L. Collins, C. Sohn, Z. Liao, E. Skoropata, S. V. Kalinin, N. Balke, G. Eres, T. Z. Ward, and H. N. Lee, Competing phases in epitaxial vanadium dioxide at nanoscaleAPL Mater7, 081127 (2019).

S. J. Noh, G. H. Ahn, J. H. Seo, Z. Gai, H. N. Lee, W. S. Choi, and S. J. Moon, (LaCoO3)n/(SrCoO2.5)n superlattices: Tunable ferromagnetic insulatorPhys. Rev. B 100, 064415 (2019). 

C. M. Folkman, S. H. Chang, H. Jeen, E. Perret, P. M. Baldo, C. Thompson, J. A. Eastman, H. N. Lee, and D. D. Fong, In operando studies of CO oxidation on epitaxial SrCoO2.5+d thin filmsAPL Mater. 7, 081126 (2019).

E. Guo, R. Desautels, D. Lee, M. A. Roldan, Z. Liao, T. Charlton, H. Ambaye, J. Molaison, R. Boehler, D. Keavney, A. Herklotz, T. Z. Ward, H. N. Lee, and M. R. Fitzsimmons, Exploiting symmetry mismatch to control magnetism in a ferroelastic heterostructurePhys. Rev. Lett. 122, 187202 (2019).

Y. Sharma, A. T. Wong, A. Herklotz, D. Lee, A. V. Ievlov, L. Collins, H. N. Lee, S. Dai, N. Balke, P. D. Rack, and T. Z. Ward, Ionic gating of ultrathin and leaky ferroelectricsAdv. Mater. Interfaces6, 1801723 (2019).

Z. Liao, M. Brahlek, J. M. Ok, L. Nuckols, Y. Sharma, Q. Lu, Y. Zhang, and H. N. Lee, Pulsed-laser epitaxy of topological insulator Bi2Te3 thin filmsAPL Mater7, 041101 (2019).

E.-J. Guo, R. D. Desautels, D. Keavney, M. A. Roldan, B. J. Kirby, D. Lee, Z. Liao, T. Charlton, A. Herklotz, T. Z. Ward, M. R. Fitzsimmons, and H. N. Lee, Nanoscale ferroelastic twins formed in strained LaCoO3 films, Sci. Adv5, eaav5050 (2019).

Z. Liao, E. Skoropata, J. W. Freeland, E.-J. Guo, R. Desautels, X. Gao, C. Sohn, A. Rastogi, T. Z. Ward, T. Zhou, T. Charlton, M. R. Fitzsimmons, and H. N. Lee, Large orbital polarization in nickelate-cuprate heterostructures by dimensional control of oxygen coordinationNature Commun. 10, 589 (2019).

[Front cover article] C. Sohn, E. Skoropata, Y. Choi, X. Gao, A. Rastogi, A. Huon, M. A. McGuire, L. Nuckols, Y. Zhang, J. Freeland, D. Haskel, and H. N. Lee, Room-temperature ferromagnetic insulating state in highly cation-ordered double perovskite Sr2Fe1+xRe1−xO6 filmsAdv. Mater31, 1805389 (2019).

E.-J. Guo, R. D. Desautels, D. Keavney, A. Herklotz, T. Z. Ward, M. R. Fitzsimmons, and H. N. Lee, Switchable orbital polarization and magnetization in strained LaCoO3 filmsPhys. Rev. Mater3, 014407 (2019).

2018

Huon, A. M. Vibhakar, A. J. Grutter, J. A. Borchers, S. Disseler, Y. Liu, W. Tian, F. Orlandi, P. Manuel, D. D. Khalyavin, Y. Sharma, A. Herklotz, H. N. Lee, M. R. Fitzsimmons, R. D. Johnson, and S. J. May, Helical magnetism in Sr-doped CaMn7O12 filmsPhys. Rev. B 98, 224419 (2018).

Y. Wen, T. Yang, D. Lee, H. N. Lee, E. J. Crumlin, and K. Huang, Temporal and thermal evolutions of surface Sr-segregation in pristine and atomic layer deposition modified La0.6Sr0.4CoO3-d epitaxial filmsJ. Mater. Chem. A 6, 24378 (2018).

E.-J. Guo, M. A. Roldan, X. Sang, S. Okamoto, T. Charlton, H. Ambaye, H. N. Lee, and M. R. Fitzsimmons, Influence of chemical composition and crystallographic orientation on the interfacial magnetism in BiFeO3/La1-xSrxMnO3 superlatticesPhys. Rev. Mater2, 114404 (2018).

R. K. Vasudevan, H. Dixit, A. Tselev, L. Qiao, T. L. Meyer, V. R. Cooper, A. P. Baddorf, H. N. Lee, P. Ganesh, and S. V. Kalinin, Surface reconstructions and modified surface states in La1-xCaxMnO3Phys. Rev. Mater. 2, 104418 (2018).

J. Hwang, R. Rao, Y. Katayama, D. Lee, X. Wang, E. Crumlin, T. Venkatesan, H. N. Lee, Y. Shao-Horn, CO2 reactivity on cobalt-based perovskitesJ. Phys. ChemC 122, 20391 (2018).

Y. Sharma, J. Balachandran, C. Sohn, J. T. Krogel, P. Ganesh, L. Collins, Q. Li, N. Balke, S. Kalinin, O. Heinonen, and H. N. Lee, Nanoscale control of metal-insulator transition in epitaxial vanadium dioxidesACS Nano 12, 7159 (2018).

Y. Sharma, B. L. Musico, X. Gao, C. Hua, A. F. May, A. Herklotz, A. Rastogi, D. Mandrus, J. Yan, H. N. Lee, M. F. Chisholm, V. Keppens, and T. Z. Ward, Single-crystal high entropy perovskite oxide epitaxial films, Phys. Rev. Materials 2, 060404(R) (2018).

Q. Lu, S. R. Bishop, D. Lee, S. Lee, H. Bluhm, H. L. Tuller, H. N. Lee, and B. Yildiz, Electrochemically triggered metal-insulator transition between VO2 and V2O5Adv. Funct. Mater. 1803024 (2018). 

E. -J. Guo, M. A. Roldan, T. Charlton, Z. Liao, Q. Zheng, H. Ambaye, A. Herklotz, Z. Gai, T. Z. Ward, H. N. Lee, and M. R. Fitzsimmons, Removal of the magnetic dead layer by geometric designAdv. Funct. Mater. 1800922 (2018).

R. Agarwal, Y. Sharma, S. Chang, K. Pitike, C. Sohn, S. M. Nakhmanson, C. G. Takoudis, H. N. Lee, R. Tonelli, J. Gardner, J. F. Scott, R. S. Katiyar, and S. Hong, Room-temperature relaxor ferroelectricity and photovoltaic effects in tin titanate directly deposited on a silicon substratePhys. Rev. B 97, 054109 (2018).

E.-J Guo, Y. Liu, C. Sohn, R. D. Desautels, A. Herklotz, Z, Liao, J. Nichols, J. W. Freeland, M. R. Fitzsimmons, and H. N. Lee, Oxygen diode formed in nickelate heterostructures by chemical potential mismatchAdv. Mater. 1705904 (2018).

[Editor’s choice] T. Meyer, R. Jacobs, D. Lee, L. Jiang, J. W. Freeland, C. Sohn, T. Egami, D. Morgan, and H. N. Lee, Strain control of oxygen kinetics in the Ruddlesden–Popper oxide La1.85Sr0.15CuO4Nature Commun9, 92 (2018).

P. C. Rogge, R. U. Chandrasena, A. Cammarata, R. J. Green, P. Shafer, B. M. Leer, A. Huon, A. Arab, E. Arenholz, H. N. Lee, T.-L. Lee, S. Nemsak, J. M. Rondinelli, A. X. Gray, and S. J. May, Electronic structure of negative charge transfer CaFeO3 across the metal-insulator transitionPhys. Rev. Mater. 2, 015002 (2018).

2017

S. Tan, M. B. Grey, M. K. Kidder, Y. Cheng, L. L. Daemen, D. Lee, H. N. Lee, Y.-Z. Ma, B. Doughty, and D. A. Lutterman, Insight into the selectivity of isopropanol conversion at strontium titanate (100) surfaces: A combination kinetic and spectroscopic studyACS Catal7, 8118 (2017).

J. H. Lee, W. S. Choi, H. Jeen, H. J. Lee, J. H. Seo, J. Nam, M. S. Yeom, and H. N. Lee, Strongly Coupled Magnetic and Electronic Transitions in Multivalent Strontium Cobaltites, Sci. Rep7, 16066 (2017).

D. Lee, R. Jacobs, Y. Jee, A. Seo, C. Sohn, A. Levlev, O. Ovchinnikova, K. Huang, D. Morgan, and H. N. Lee, Stretching epitaxial La0.6Sr0.4CoO3-δ for fast oxygen reductionJ. Phys. ChemC 121, 25651 (2017).

Kwon, D. Seol, D. Lee, H. Han, I. Lindfors-Vrejoiu, W. Lee, S. Jesse, H. N. Lee, S. V. Kalinin, M. Alexe, and Y. Kim, Direct probing of polarization charge at nanoscale levelAdv. Mater. 1703675 (2017).

[Featured Review] A. Herklotz, D. Lee, E.-J. Guo, T. L. Meyer, J. R. Petrie, and H. N. Lee, Strain coupling of oxygen nonstoichiometry in perovskite thin filmsJ. Phys.: Condens. Matter 29, 493001 (2017).

Huon, D. Lee, A. Herklotz, M. R. Fitzsimmons, H. N. Lee, and S. May, Effect of chemical pressure on the electronic phase transition in Ca1-xSrxMn7O12 filmsAPL Mater. 5, 096105 (2017).

X. Pan, X. Gao, X. Chen, H. N. Lee, and Z. Yi, Design synthesis of nitrogen-doped TiO2@carbon nanosheets toward selective nitroaromatics reduction under mild conditionsACS Catalysis 7, 6991 (2017).

B. Doughty, S. G. Srinivasan, V. S. Brayantsev, D. Kee, H. N. Lee, Y.-Z. Ma, and D. A. Lutterman, Absolute molecular orientation of isopropanol at ceria (100) surfaces: Insight into catalytic selectivity from interfacial structureJ. Phys. Chem. C 121, 14137 (2017).

W. Zhu, Z. Wu, G. S. Foo, X. Gao, M. Zhou, B. Liu, G. M. Veith, P. Wu, K. L. Browning, H. N. Lee, H. Li, S. Dai, and H. Zhu, Taming interfacial electronic properties of platinum nanoparticles on vacancy-abundant boron nitride nanosheets for enhanced catalysis, Nature Commun8, 15291 (2017).

S. Ryu, J. Lee, E. Ahn, J.-W. Kim, A. Herklotz, J. S. Bae, H. N. Lee, Y. H. Kim, J.-Y. Kim, T. Jeon, J. H. Cho, S. Park, and H. Jeen, Growth of electronically distinct manganite thin films by modulating cation stoichiometryAppl. Phys. Lett. 110, 261601 (2017).

J. Nichols, S. Yuk, C. Sohn, H. Jeen, J. W. Freeland, V. R. Cooper, and H. N. Lee, Electronic and magnetic properties of epitaxial SrRhO3 filmsPhys. Rev. B 95, 245121 (2017).

E. J. Guo, J. R. Petrie, M. A. Roldan, Q. Li, R. D. Desautels, T. Charlton, A. Herklotz, J. Nichols, J. W. Freeland, S. V. Kalinin, H. N. Lee, and M. R. Fitzsimmons, Spatially resolved large magnetization in ultrathin BiFeO3Adv. Mater. 1700790 (2017).

E. Guo, T. Charlton, H. Ambaye, R. Desautels, H. N. Lee, and M. R. Fitzsimmons, Orientation control of interfacial magnetism at La0.67Sr0.33MnO3/SrTiO3 interfacesACS Appl. Mater. Interfaces 9, 19307 (2017).

S. Okamoto, J. Nichols, C. Sohn, S. Kim, T. W. Noh, and H. N. Lee, Charge transfer in iridate-manganite superlatticesNano Lett17, 2126 (2017).

S. Lee, X.-G. Sun, A. A. Lubimtsev, X. Gao, G. Panchapakesan, T. Z. Ward, G. Eres, M. F. Chisholm, S. Dai, and H. N. Lee, Persistent electrochemical performance in epitaxial VO2(B)Nano Lett17, 2229 (2017).

L. Fan, X. Gao, D. Lee, E. J. Guo, S. Lee, P. C. Snijders, T. Z. Ward, G. Eres, M. F. Chisholm, H. N. Lee, Kinetically controlled fabrication of single-crystalline TiO2 nanobrush architectures with high energy {001} facetsAdv. Sci. 1700045 (2017).

W. S. Choi, K. T. Kang, H. Jeen, Z. Gai, and H. N. Lee, Highly insulating ferromagnetic cobaltite heterostructuresCurrent Appl. Phys17, 722 (2017).

(Review) D. Lee and H. N. Lee, Controlling oxygen mobility in Ruddlesden-Popper OxidesMaterials 10, 368 (2017).

Z. Diao, H. N. Lee, M. F. Chisholm, and R. Jin, Thermoelectric properties of Bi2Sr2Co2Oy thin films and single crystalsPhysica B 511, 42 (2017).

A. Herklotz, E. Guo, A. T. Wong, T. L. Meyer, S. Dai, T. Z. Ward, H. N. Lee, and M. R. Fitzsimmons, Reversible control of interfacial magnetism through ionic-liquid-assisted polarization switchingNano Lett17, 1665 (2017).

D. Lee, X. Gao, L. Fan, E.-J. Guo, T. O. Farmer, W. T. Heller, T. Z. Ward, G. Eres, M. R. Fitzsimmons, M. F. Chisholm, and H. N. Lee, Nonequilibrium Synthesis of Highly Porous Single-Crystalline Oxide NanostructuresAdv. Mater. Interfaces4, 1601034 (2017).

2016

T. L. Meyer, A. Herklotz, V. Lauter, J. W. Freeland, J. Nichols, E.-J. Guo, S. Lee, T. Z. Ward, N.  Balke, S. V. Kalinin, M. R. Fitzsimmons, and H. N. Lee, Enhancing interfacial magnetization with a ferroelectricPhys. Rev. B 94, 174432 (2016).

G. Eres, J. Z. Tischler, C. M. Rouleau, H. N. Lee, H. M. Christen, P. Zschack, and B. C. Larson, Dynamic scaling and island growth kinetics in pulsed laser deposition of SrTiO3Phys. Rev. Lett117, 206102 (2016). 

X. Gao, S. Lee, J. Nichols, T. L. Meyer, T. Z. Ward, M. F. Chisholm, and H. N. Lee, Nanoscale self-templating for oxide epitaxy with large symmetry mismatchSci. Rep6, 38168 (2016).

J. Holleman, M. M. Bishop, C. Garcia, J. S. R. Vellore Winfred, S. Lee, H. N. Lee, C. Beekman, E. Manousakis, and S. A. McGill, Evidence for Impact ionization in vanadium dioxidePhys. Rev. B 94, 155129 (2016).

J. Thompson, J. Hwang, S. Ryee, J. Gruenewald­, J. G. Connell, J. Nichols, S. Lee, M. J. HanHN. Lee, D.-W. Kim, and S. S. A. Seo, Enhanced metallic properties of SrRuO3 thin films via kinetically controlled pulsed laser epitaxyAppl. Phys. Lett109, 161902 (2016).

B. Kim, D. Seol, S. Lee, H. N. Lee, and Y. Kim, Ferroelectric-like hysteresis loop originated from non-ferroelectric effectsAppl. Phys. Lett109, 102901 (2016).

J. E. Hamann-Borrero, S. Macke, W. S. Choi, R. Sutarto, F. He, A. Radi, I. Elfimov, J. Green, M. W. Haverkort, V. B. Zabolotnyy, H. N. Lee, G. A. Sawatzky, and V. Hinkov, Valence state reflectometry of complex oxide heterointerfaces, npj Quant. Mater. 1, 16013 (2016).

A. Herklotz, H. W. Guo, A. T. Wong, H. N. Lee, P. D. Rack, and T Z. Ward, Multimodal responses of self-organized circuitry in electronically phase separated materialsAdv. Electro. Mater2, 1600189 (2016). Cover image article.

D. Seol, S. Park, O. Varenyk, S. Lee, H. N. Lee, A. Morozovska, Y. Kim, Determination of ferroelectric contributions to electromechanical response by frequency dependent piezoresponse force microscopySci. Rep. 6, 30579 (2016).

J. Nichols, X. Gao, S. Lee, T. L. Meyer, J. W. Freeland, V. Lauter, D. Yi, J. Liu, D. Haskel, J. R. Petrie, E. Guo, A. Herklotz, D. Lee, T. Z. Ward, G. Eres, M. R. Fitzsimmons, and H. N. Lee, Emerging magnetism and anomalous Hall effect in iridate-manganite heterostructuresNature Comm. 7, 12721 (2016). 

J. R. Petrie, H. Jeen, S. C. Barron, T. L. Meyer, and H. N. Lee, Enhancing perovskite electrocatalysis through strain tuning of the oxygen deficiencyJ. Am. Chem. Soc138, 7252 (2016). 

A. Herklotz, A. Wong, T. Meyer, M. Biegalski, H. N. Lee, and T. Z. Ward, Controlling octahedral rotations in a perovskite via strain dopingSci. Rep6, 26491 (2016).

Tselev, R. K. Vasudevan, A G. Gianfrancesco, L. Qiao, T. L. Meyer, H. N. Lee, M. D. Biegalski, A. P. Baddorf, and S. V. Kalinin, Growth mode transition in complex oxide heteroepitaxy: Atomically resolved studiesCryst. Growth Des16, 2708 (2016).

H. Wang, J. Wen, D. J. Miller, Q. Zhou, H. N. Lee, K. M. Rabe, and X. Wu, Stabilization of highly polar BiFeO3-like structure: a new interface design route for enhanced ferroelectricity in artificial perovskite superlatticesPhys. Rev. X6, 011027 (2016). – Featured also in Physics Viewpoint (http://physics.aps.org/articles/v9/28)

Z. Q. Liu, L. Li, Z. Gai, J. D. Clarkson, A. T. Wong, L. S. Fan, M.-W. Lin, J. M. Black, N. Balke, C. M. Rouleau, T. Z. Ward, H. N. Lee, A. S. Sefat, H. M. Christen, and R. Ramesh, Full electroresistance modulation in a mixed-phase metallic alloy, Phys. Rev. Lett. 116, 097203 (2016).

Y. Wang, S. Lee, P. Vilmercati, H. N. Lee, H. H. Weitering, and P. C. Snijders, Atomically flat reconstructed rutile TiO2(001) surfaces for oxide film growthAppl. Phys. Lett108, 091604 (2016).

J. R. Petrie, V. R. Cooper, J. W. Freeland, T. L. Meyer, Z. Zhang, D. A. Lutterman, and H. N. Lee, Enhanced bifunctional oxygen catalysis in strained LaNiO3 perovskitesJ. Am. Chem. Soc138, 2488 (2016). 

J. R. Petrie, C. Mitra, H. Jeen, W. S. Choi, T. Meyer, F. A. Reboredo, J. W. Freeland, G. Eres, and H. N. Lee, Strain control of oxygen vacancies in epitaxial strontium cobaltite filmsAdv. Funct. Mater. 26, 1564 (2016).

S. Lee, I. N. Ivanov, J. K. Keum, and H. N. Lee, Epitaxial stabilization and phase instability of VO2 polymorphsSci. Rep. 6, 19621 (2016).

H. N. Lee, S. S. A. Seo, W. S. Choi, and C. M. Rouleau, Growth control of oxygen stoichiometry in homoepitaxial SrTiO3 films by pulsed laser epitaxy in high vacuumSci. Rep. 6, 19941 (2016).

W. T. Hong, K. A. Stoerzinger, E. J. Crumlin, E. Mutoro, H. Jeen, H. N. Lee, and Y. Shao-Horn, Near-ambient pressure XPS of high-temperature surface chemistry in Sr2Co2O5 thin filmsTopics in Catalysis 59, 574 (2016).

Y.-L. Lee, D. Lee, X. R. Wang, H. N. Lee, D. Morgan, and Y. Shao-Horn, Kinetics of Oxygen Surface Exchange on Epitaxial Ruddlesden-Popper Phases and Correlations to First-Principles DescriptorsJ. Phys. Chem. Lett. 7, 244 (2016).

Z. Q. Liu, M. D. Biegalski, S. L. Hsu. S. L. Shang, C. Marker, J. Liu, L. Li, T. Meyer, A. T. Wong, J. A. Nichols, D. Y. Chen, L. You, Z. H. Chen, K. Wang, K. Wang, T. Z. Ward, Z. Gai, H. N. Lee, A. S. Sefat, V. Lauter, Z. K. Liu, and H. M. Christen, Epitaxial growth of intermetallic MnPt films on oxides and large exchange biasAdv. Mater. 28, 118 (2016)

T. L. Meyer, H. Jeen, X. Gao, J. R. Petrie, M. F. Chisholm, and H. N. Lee, Symmetry-driven atomic rearrangement at a brownmillerite-perovskite interfaceAdv. Electron. Mater2, 1500201 (2016).

2015

S. Lee, T. L. Meyer, C. Sohn, D. Lee, J. Nichols, D. Lee, S. S. A. Seo, J. W. Freeland, T. W. Noh, and H. N. Lee, Electronic structure and insulating gap in epitaxial VO2 polymorphsAPL Mater. 3, 126109 (2015).

T. L. Meyer, L. Jiang, S. Park, T. Egami, and H. N. Lee, Strain-relaxation and critical thickness of epitaxial La1.85Sr0.15CuO4 filmsAPL Mater3, 126102 (2015).

L. Poudel, C. de la Cruz, E. A. Payzant, A. F. May, M. Koehler, V. O. Garlea, A. E. Taylor, D. S. Parker, H. B. Cao, M. A. McGuire, W. Tian, M. Matsuda, H. Jeen, H. N. Lee, T. Hong, S. Calder, H. D. Zhou, M. D. Lumsden, V. Keppens, D. Mandrus, and A. D. Christianson, Structural and Magnetic Phase Transitions in CeCu6-xTx (T = Ag, Pd)Phys. Rev. B92, 214421 (2015).

H. Jeen and H. N. Lee, Structural evolution of epitaxial SrCoOx films during topotactic phase transitionAIP Advances 5, 127123 (2015).

A. Glamazda, K.-Y. Choi, P. Lemmens, W. S. Choi, H. Jeen, T. L. Meyer, and H. N. Lee, Structural instability of the CoO4 tetrahedral chain in SrCoO3-δ thin filmsJ. Appl. Phys118, 085313 (2015).

W. S. Choi, S. A. Lee, I. R. Hwang, S. Lee, and H. N. Lee, Resonant tunneling in a quantum oxide superlatticeNature Commun. 6, 7424 (2015).

H. N. Lee, A new class of materials, International Innovations173, 61 (2015).

K. A. Stoerzinger, W. S. Choi, H. Jeen, H. N. Lee, and Y. Shao-Horn, Role of Strain and conductivity in oxygen electrocatalysis on LaCoO3 thin filmsJ. Phys. Chem. Lett6, 487 (2015).

W. S. Choi and H. N. Lee, Strain tuning of electronic structure in Bi4Ti3O12-LaCoO3 epitaxial thin filmsPhys. Rev. B91, 174101 (2015).

J. H. You, J. H. Lee, S. Okamoto, V. Cooper, and H. N. Lee, Strain effects on the electronic properties in δ-doped oxide superlatticesJ. Phys. D: Appl. Phys48, 085303 (2015).

A. Tselev, R. K. Vasudevan, A. G. Gianfrancesco, L. Qiao, P. Ganesh, T. L. Meyer, H. N. Lee, M. D. Biegalski, A. P. Baddorf, and S. V. Kalinin, Surface control of epitaxial manganite films via oxygen pressureACS Nano 9, 4316 (2015).

P. Munkhbaatar, Z. Marton, B. Tsermaa, W. S. Choi, S. S. A. Seo, J. S. Kim, N. Nakagawa, H. Y. Hwang, H. N. Lee, and K. Myung-Whun, Room-temperature optical anisotropy of a LaMnO3 thin film induced by ultra-short pulse laserAppl. Phys. Lett106, 092907 (2015).

2014

S. Lee, T. Meyer, S. Park, T. Egami, and H. N. Lee, Growth control of the oxidation state in vanadium oxide thin filmsAppl. Phys. Lett. 105, 223515 (2014).

Mitra, T. Meyer, H. N. Lee, and F. A. Reboredo, Oxygen diffusion pathways in brownmillerite SrCoO2.5: Influence of structure and chemical potentialJ. Chem. Phys. 141, 084710 (2014).

W. Choi, H. Ohta, and H. N. Lee, Thermopower enhancement by fractional layer control in 2D oxide superlatticesAdv. Mater26, 6701 (2014).

V. R. Cooper, S. S. A. Seo, S. Lee, J. S. Kim, W S. Choi, S. Okamoto, and H. N. Lee, Transparent conducting oxides: A delta-doped superlattice approachNature: Sci. Rep. 4, 6021 (2014).

W. Jeong, W. S. Choi, S. Okamoto, J.–Y. Kim, K. W. Kim, S. J. Moon, D.-Y. Cho, H. N. Lee, and T. W. Noh,Dimensionality control of d-orbital occupation in oxide superlatticesNature: Sci. Rep. 4, 6124 (2014).

Sun, M. Fang, X. Xu, L. Jiang, H. Guo, Y. Wang, W. Yang, L. Yin, P. C. Snijders, T. Z. Ward, Z. Gai, X.-G. Zhang, H. N. Lee, and J. Shen, Active control of magnetoresistance of organic spin valves using ferroelectricityNature Commun5, 4396 (2014).

J.-H. Kwon, W. S. Choi, Y.-K. Kwon, R. Jung, J.-M. Zuo, H. N. Lee, and M. Kim, Nanoscale spin‑state ordering in LaCoO3 epitaxial thin filmsChem. Mater. 26, 2496 (2014). 

T. T. Fister, H. Zhou, Z. Luo, S. S. A. Seo, S. O. Hruszkewycz, D. L. Proffit, J. A. Eastman, P. H. Fuoss, P. M. Baldo, H. N. Lee, and D. D. Fong, Octahedral rotations in strained LaAlO3/SrTiO3 (001) heterostructuresAPL Mater. 2, 021102 (2014).

C. Mitra, R. S. Fishman, S. Okamoto, H. N. Lee, and F. A. Reboredo, Ground-state and spin-wave dynamics in brownmillerite SrCoO2.5 – A Combined hybrid functional and LSDA + U studyJ. Phys.: Condens. Matter 26, 036004 (2014). 

2013

L. JiangW. S. ChoiH. JeenS. DongY. S. KimM. G. Han, Y. Zhu, S. V. Kalinin, E. DagottoT. Egamiand H. N. Lee, Tunneling electroresistance induced by interfacial phase transitions in ultrathin oxide heterostructures, Nano Lett13, 5837 (2013).

J. K. Lee, G. Y. Shin, K. Song, W. S. Choi, Y. A. Shin, S. Y. Park, J. Britson, Y. Cao, L.-Q. Chen, H. N. Lee, and S. H. Oh, Direct observation of asymmetric domain wall motion in a ferroelectric capacitorActa Materialia 61, 6765 (2013).

W. S. Choi, H. Jeen, J. H. Lee, S. S. A. Seo, V. R. Cooper, K. M. Rabe, and H. N. Lee, Reversal of the lattice structure in SrCoOx epitaxial thin films studied by real-time optical spectroscopy and first-principles calculationsPhys. Rev. Lett111, 097401 (2013).

H. Jeen, Z. Bi, W. S. Choi, M. F. Chisholm, C. A. Bridges, M. P. Paranthaman, and H. N. Lee, Orienting oxygen vacancies for fast catalytic reactionAdv. Mater. 26, 6459 (2013).

H. Jeen, W. S. Choi, M. D. Biegalski, I. C. Tung, J. W. Freeland, D. Shin, H. Ohta, M. F. Chisholm, and H. N. Lee, Reversible redox reactions in an epitaxially stabilized SrCoOx oxygen spongeNature Mater. 12, 1057 (2013).

W. Wang, J. Zhao, W. Wang, Z. Gai, N. Balke, M. Chi, H. N. Lee, W. Tian, L. Zhu, X. Cheng, D. J. Keavney, J. Yi, T. Z. Ward, P. C. Snijders, H. M. Christen, W. Wu, J. Shen, and X. Xu, Room-temperature multiferroics hexagonal LuFeO3filmsPhys. Rev. Lett. 110, 237601 (2013).

H. Jeen, W. S. Choi, J. W. Freeland, H. Ohta, C. U. Jung, and H. N. Lee, Topotactic phase transformation of the brownmillerite SrCoO2.5 to the perovskite SrCoO3-δAdv. Mater25, 3651 (2013).

J. Park, B.-G. Cho, K. D. Kim, J. Koo, H. Jang, K.-T. Ko, J.-H. Park, K.-B. Lee, J.-Y. Kim, D. R. Lee, C. A. Burns, S. S. A. Seo, and H. N. Lee, Oxygen vacancy-induced orbital reconstruction of Ti ions at the interface of LaAlO3/SrTiO3heterostructures: A resonant soft x-ray scattering studyPhys. Rev. Lett. 110, 017401 (2013).

2012

W. S. Choi, C. M. Rouleau, S. S. A. Seo, Z. Luo, H. Zhou, T. T. Fister, J. A. Eastman, P. H. Fuoss, D. D. Fong, J. Z. Tischler, G. Eres, and H. N. Lee, Atomic layer engineering of perovskite oxides for chemically sharp heterointerfacesAdv. Mater. 24, 6423 (2012).

T. Choi, L. Jiang, S. Lee, T. Egami, and H. N. Lee, High rectification and photovoltaic effect in oxide nanojunctionsNew J. Phys14, 093056 (2012).

W. S. Choi, J.-H. Kwon, H. Jeen, J. E. Hamann-Borrero, A. Radi, S. Macke, R. Sutarto, F. He, G. A. Sawatzky, V. Hinkov, M. Kim, and H. N. Lee, Strain-induced spin states in atomically ordered cobaltites, Nano Lett. 12, 4966 (2012).

W. S. Choi, S. Lee, V. Cooper, and H. N. Lee, Fractionally δ-doped oxide superlattices for higher carrier mobilitiesNano Lett. 12, 4590 (2012).

L. Jiang, W. S. Choi, H. Jeen, T. Egami, and H. N. Lee, Strongly coupled phase transition in ferroelectric/correlated electron oxide heterostructuresAppl. Phys. Lett. 101, 042902 (2012).

W. S. Choi and H. N. Lee, Band gap tuning in ferroelectric Bi4Ti3O12 by alloying with LaTMO3 (TM = Ti, V, Cr, Mn, Co, Ni, and Al)Appl. Phys. Lett100, 132903 (2012).

W. S. Choi, M. F. Chisholm, D. J. Singh, T. Choi, G. E. Jellison, and H. N. Lee, Wide band gap tunability in complex transition metal oxides by site-specific substitutionNature Comm. 3, 689 (2012).

Lee, S. M. Yang, T. H. Kim, B. C. Jeon, Y. S. Kim, J.-G. Yoon, H. N. Lee, S. H. Baek, C. B. Eom, and T. W. Noh, Multilevel data storage memory using deterministic polarization controlAdv. Mater24, 402 (2012).

P. Chen, J. Y. Jo, H. N. Lee, E. M. Dufresne, S. M. Nakhmanson, and P. G. Evans, Domain and symmetry transition origins of reduced nanosecond piezoelectricity in ferroelectric/dielectric superlatticesNew J. Phys14, 013034 (2012).

2011

S. H. Lee, X.- G. Zhang, C. M. Parish, H. N. Lee, D. B. Smith, Y. He, and J. Xu, Nanocone tip–film solar cells with efficient charge transportAdv. Mater23, 4381 (2011).

N. M. Murari, S. Hong, H. N. Lee, and R. S. Katiyar, Direct observation of fatigue in epitaxially grown Pb(Zr,Ti)O3 thin films using second harmonic piezoresponse force microscopyAppl. Phys. Lett. 99, 052904 (2011).

P. Yordanov, A. V. Boris, J. W. Freeland, J. Chakhalian, H. N. Lee, and B. Keimer, Far-infrared and dc-magnetotransport of CaMnO3-CaRuO3 superlatticesPhys. Rev. B 84, 045108 (2011).

W. S. Choi, D. W. Jeong, S. S. A. Seo, Y. S. Lee, T. H. Kim, S. Y. Jang, H. N. Lee, and K. Myung-Whun, Charge states and magnetic ordering in LaMnO3/SrTiO3 superlatticesPhys. Rev. B 83, 195113 (2011).

S. M. Yang, S. Y. Jang, T. H. Kim, H. H. Kim, H. N. Lee, J.-G. Yoon, Scaling behavior of amplitude-dependent ferroelectric hysteresis loops in an epitaxial PbZr0.2Ti0.8O3 thin film, J. Kor. Phys. Soc. 58, 599 (2011).

W. S. Choi, D. W. Jeong, S. Y. Jang, Z. Marton, S. S. A. Seo, H. N. Lee, and Y. S. Lee, LaMnO3 thin films grown by using pulsed laser deposition and their simple recovery to a stoichiometric phase by annealingJ. Kor. Phys. Soc58, 569 (2011).

H. Ko, K. Ryu, H. Park, C. Park, D. Heon, Y. K. Kim, J. Jung, D.-K. Min, Y. Kim, H. N. Lee, Y. Park, H. Shin, and S. Hong, High-resolution field effect sensing of ferroelectric chargesNano Lett. 11, 1428 (2011).

<2010

S. M. Yang, J. Y. Jo, T. H. Kim, J.-G. Yoon, T. K. Song, H. N. Lee, Z. Marton, S. Park, Y. Jo, and T. W. Noh, acdynamics of ferroelectric domains from an investigation of the frequency dependence of hysteresis loops, Phys. Rev. B 82, 174125 (2010).

J. S. Kim, S. S. A. Seo, R. K. Kremer, H.-U. Habermeier, B. Keimer, and H. N. Lee, Nonlinear Hall effect and multichannel conduction in LaTiO3/SrTiO3 superlattices, Phys. Rev. B 82, 201407(R) (2010).

M. F. Chisholm, W. Luo, M. P. Oxley, S. Pantelides, and H. N. Lee, Atomic-scale compensation phenomena at polar interfaces, Phys. Rev. Lett105, 197602 (2010).
D. J. Singh, S. S. A. Seo, and H. N. Lee, Optical properties of ferroelectric Bi4Ti3O12Phys. Rev. B 82, 180103(R) (2010).
J. Y. Jo, R. J. Sichel, E. M. Dufresne, H. N. Lee, S. M. Nakhmanson, and P. G. Evans, Component-specific electromechanical response in a ferroelectric/dielectric superlattice, Phys. Rev. B 82, 174116 (2010).
Z. Marton, S. S. A. Seo, T. Egami, and H. N. Lee, Growth control of oxygen stoichiometry in LaMnO3 epitaxial thin films by pulsed laser deposition, J. Cryst. Growth 312, 2923 (2010).
B. Gray, H. N. Lee, J. Liu, J. Chakhalian, and J. W. Freeland, Local electronic and magnetic studies of an artificial La2CrFeO6 double perovskite, Appl. Phys. Lett97, 013105 (2010).
J. Y. Jo, R. J. Sichel, H. N. Lee, S. M. Nakhmanson, E. M. Dufresne, and P. G. Evans, Piezoelectricity in the dielectric component of nanoscale dielectric-ferroelectric superlattices, Phys. Rev. Lett. 104, 207601 (2010).
J.W. Freeland, J. Chakhalian, A.V. Boris, J.-M. Tonnerre, J.J. Kavich, P. Yordanov, S. Grenier, P. Popovich, H.N. Lee, B. Keimer, Charge transport and magnetization profile at the interface between the correlated metal CaRuO3 and the antiferromagnetic insulator CaMnO3Phys. Rev. B 81, 094414 (2010).
S. S. A. Seo, Z. Marton, W. S. Choi, G. W. Hassink, D. H. A. Blank, H. Y. Hwang, T. W. Noh, T. Egami, and H. N. Lee, Multiple conducting carriers generated in LaAlO3/SrTiO3 heterostructures, Appl. Phys. Lett. 95, 082107 (2009).
S. M. Yang, J. W. Heo, H. N. Lee, T. K. Song, and J.-G. Yoon, Quantitative analysis of the nucleation and growth of ferroelectric domains in epitaxial Pb(Zr,Ti)O3 thin films, J. Kor. Phys. Soc55, 820 (2009).
S. S. A. Seo and H. N. Lee, Strain-coupled ferroelectric polarization in BaTiO3-CaTiO3 superlattices, Appl. Phys. Lett.94, 232904 (2009).
W. S. Choi, Z. Marton, S. Y. Jang, S. J. Moon, B. C. Jeon, J. H. Shin, S. S. A. Seo, T. W. Noh, K. Myung-Whun, H. N. Lee, and Y. S. Lee, Effects of oxygen-reducing atmosphere annealing on LaMnO3 epitaxial thin films, J. Phys. D: Appl. Phys42, 165401 (2009).
A. Grigoriev, R. J. Sichel, J. Y. Jo, S. Choudhury, L.-Q. Chen, D. Morgan, H. N. Lee, E. C. Landahl, B. W. Adams, E. M. Dufresne, and P. G. Evans, Stability of the unswitched ferroelectric polarization state of ultrathin epitaxial Pb(Zr,Ti)O3 in large electric fields, Phys. Rev. B 80, 014110 (2009).
J. Y. Jo, S. M. Yang, T. H. Kim, H. N. Lee, J.-G. Yoon, S. Park, Y. Jo, M. H. Jung, and T. W. Noh, Nonlinear dynamics of domain-wall propagation in epitaxial ferroelectric thin films, Phys. Rev. Lett102, 045701 (2009).
D. A. Tenne, H. N. Lee, R. S. Katiyar, and X. X. Xi, Ferroelectric phase transitions in three-component short-period superlattices studied by ultraviolet Raman spectroscopy, J. Appl. Phys. 105, 054106 (2009).
M. F. Chisholm, H. N. Lee, W. Luo, and S. T. Pantelides, Simultaneous Z-contrast/phase contrast imaging of ferroelectric thin films, Microscopy and Microanalysis15, 1464 (2009).
S. M. Yang, J. Y. Jo, D. J. Kim, H. Sung, T. W. Noh, H. N. Lee, J.-G. Yoon, and T. K. Song, Domain wall motion in epitaxial Pb(Zr,Ti)O3 capacitors investigated by modified piezoresponse force microscopy, Appl. Phys. Lett92, 252901 (2008).
A. Grigoriev, R. Sichel, H. N. Lee, E. C. Landahl, B. Adams, E. M. Dufresne, and P. G. Evans, Non-linear piezoelectricity in epitaxial ferroelectrics at high electric fieldsPhys. Rev. Lett100, 027604 (2008).
D. H. Kim, H. N. Lee, M. D. Biegalski, and H. M. Christen, Effect of epitaxial strain on ferroelectric polarization in multiferroic BiFeO3 films, Appl. Phys. Lett. 92, 012911 (2008).
S. S. A. Seo, W. S. Choi, H. N. Lee, L. Yu, K. W. Kim, C. Bernhard, and T. W. Noh, Optical study of the free carrier response of LaTiO3/SrTiO3 superlattices, Phys. Rev. Lett99, 266801 (2007).
S. S. A. Seo, J. H. Lee, H. N. Lee, M. F. Chisholm, W. S. Choi, D. J. Kim, J. Y. Jo, H. Kim, J. Yu, and T. W. Noh, Ferroelectricity in artificial bicolor oxide superlattices, Adv. Mater. 19, 2460 (2007).
E. Jellison, Jr., J. D. Hunn, and H. N. Lee, Measurement of the optical functions of highly oriented pyrolytic graphite (HOPG) in the visible, Phys. Rev. B 76, 085125 (2007).
M. Yoon, H. N. Lee, W. Hong, H. M. Christen, Z. Zhang, and Z. Suo, Dynamics of step bunching in heteroepitaxial growth on vicinal substrates, Phys. Rev. Lett. 99, 055503 (2007).
D. H. Kim, H. N. Lee, M. D. Biegalski, and H. M. Christen, Large ferroelectric polarization in antiferromagnetic BiFe0.5Cr0.5O3 epitaxial films, Appl. Phys. Lett. 91, 042906 (2007).
H. N. Lee, S. M. Nakhmanson, M. F. Chisholm, H. M. Christen, K. M. Rabe, and D. Vanderbilt, Suppressed dependence of polarization on epitaxial strain in highly polar ferroelectrics, Phys. Rev. Lett. 98, 217602 (2007).
D. H. Kim, H. N. Lee, M. Varela, and H. M. Christen, Antiferroelectricity in multiferroic BiCrO3 epitaxial films, Appl. Phys. Lett, 89, 162904 (2006).
S. K. Lee, D. Hesse, U. Goesele, and H. N. Lee, Influence of miscut Y2O3-stabilized ZrO2 substrates on the azimuthal domain structure and ferroelectric properties of epitaxial La-substituted Bi4Ti3O12 films, J. Appl. Phys. 100, 64101 (2006).
S. V. Kalinin, S. Jesse, B. J. Rodriguez, J. Shin, A. P. Baddorf, H. N. Lee, A. Borisevich, S. J. Pennycook, Spatial resolution, information limit, and contrast transfer in piezoresponse force microscopy, Nanotechnology 17, 3400 (2006).
S. Jesse, H. N. Lee, and S. Kalinin, Quantitative mapping of switching behavior in piezoresponse force microscopy, Rev. Sci. Inst77, 73702 (2006).
D. H. Kim, H. M. Christen, M. Varela, H. N. Lee, and D. H. LowndesEffect of strain on structure and charge order transitions in epitaxial Bi0.4Ca0.6MnO3 films on perovskite (001) and (011) substrates, Appl. Phys. Lett. 88, 202503 (2006).
W. Hong, H. N. Lee, M. Yoon, H. M. Christen, D. H. Lowndes, Z. Suo, and Z. Zhang, Persistent step-flow growth of strained films on vicinal substratesPhys. Rev. Lett. 95, 095501 (2005)
H. N. Lee, H. M. Christen, M. F. Chisholm, C. M. Rouleau, and D. H. Lowndes, Strong polarization enhancement in asymmetric three-component ferroelectric superlattices, Nature433, 395 (2005).
X. Zhu, S. K. Lee, H. N. Lee, and D. Hesse, Microstructure of (110)-oriented epitaxial SrRuO3 thin films grown on off-cut single crystal YSZ(100) substrates, Mater. Sci. Eng. B 118, 60 (2005).
S. K. Lee, D. Hesse, U. Goesele, and H. N. Lee, Reducing azimuthal domains in epitaxial ferroelectric lanthanum-substituted bismuth titanate films using miscut yttria-stabilized zirconia substrates, Appl. Phys. Lett. 86, 142903 (2005).
Shin, S. V. Kalinin, H. N. Lee, H. M. Christen, R. G. Moore, E. W. Plummer, and A. P. Baddorf, Surface stability of epitaxial SrRuO3 films, Surf. Sci. 581, 118 (2005).
S. S. A. Seo, H. N. Lee, and T. W. Noh, Infrared spectroscopy of CaTiO3, SrTiO3, BaTiO3, Ba0.5Sr0.5TiO3 thin films, and (BaTiO3)5/(SrTiO3)5 superlattice grown on SrRuO3/SrTiO3(001) substratesThin Solid Films 486, 94 (2005).
Shin, S. V. Kalinin, H. N. Lee, H. M. Christen, R. G. Moore, E. W. Plummer, and A. P. Baddorf, Surface stability of epitaxial SrRuO3 thin films in vacuum, J. Mater. Res19, 3447 (2004).
S. K. Lee, H. N. Lee, X. H. Zhu, D. Hesse, and U. Goesele, Reducing azimuthal domains in (100)- or (118)-oriented ferroelectric Bi3.25La0.75Ti3O12 films using off-cut single crystal substrates, Integrated Ferroelectrics68, 179 (2004).
H. N. Lee, H. M. Christen, M. F. Chisholm, C. M. Rouleau, and D. H. Lowndes, Thermal stability of epitaxial SrRuO3films as a function of oxygen pressure, Appl. Phys. Lett. 84, 4107 (2004).
H. M. Christen, C. M. Rouleau, I. Ohkubo, H. Y. Zhai, H. N. Lee, S. Sathyamurthy, and D. H. Lowndes, An improved continuous compositional-spread technique based on pulsed laser deposition and applicable to large substrate areasRev. Sci. Instrum74, 4058 (2003).
H. N. Lee, D. Hesse, N. Zakharov, S. K. Lee, and U. Gösele, Growth of uniformly a-axis-oriented ferroelectric lanthanum-substituted bismuth titanate films on silicon substrates, J. Appl. Phys. 93, 5592 (2003).
D. Hesse, H. N. Lee, and N. D. Zakharov, Comparing crystallography and ferroelectric properties of a-axis oriented Bi3.25La0.75Ti3O12 versus non-c-axis oriented SrBi2Ta2O9 thin films on Si(100), Ferroelectrics288, 287-301 (2003).
H. N. Lee, D. Hesse, N. Zakharov, and U. Gösele, Ferroelectric Bi3.25La0.75Ti3O12 films of uniform a-axis orientation on silicon substrates, Science 296, 2006 (2002).
A. Visinoiu, M. Alexe, H. N. Lee, D. N. Zakharov, A. Pignolet, D. Hesse, and U. Gösele, Initial growth stages of epitaxial BaTiO3 thin films on vicinal SrTiO3 substrate surfaces, J. Appl. Phys91, 10157 (2002).
H. N. Lee and D. Hesse, Anisotropic ferroelectric properties of epitaxially twinned Bi3.25La0.75Ti3O12 thin films grown with three different orientations, Appl. Phys. Lett. 80, 1040 (2002).
H. N. Lee, D. Zakharov, S. Senz, A. Pignolet, and D. Hesse, Growth and characterization of non-c-axis-oriented SrBi2Ta2O9 epitaxial thin films on Si(100) substrates with SrRuObottom electrodes, Integrated Ferroelectrics 39, 1023 (2001).
A. Pignolet, C. Harnagea, H. N. Lee, A. Visinoiu, S. Senz, and D. Hesse, Ferroelectricity in epitaxial pulsed laser deposited bismuth-layered perovskite thin films of different crystallographic orientations, Ferroelectrics 258, 197 (2001).
H. N. Lee, D. N. Zakharov, S. Senz, A. Pignolet, and D. Hesse, Epitaxial growth of ferroelectric SrBi2Ta2O9 thin films of mixed (100) and (116) orientation on SrLaGaO4(110), Appl. Phys. Lett. 79, 2961 (2001).
H. N. Lee, S. Senz, A. Pignolet, and D. Hesse, Epitaxial growth of non-c-oriented ferroelectric SrBi2Ta2O9 thin films on SrTiO3 substrates, J. Europ. Ceram. Soc21, 1565 (2001).
H. N. Lee, S. Senz, A. Pignolet, D. Hesse, and U. Gösele, Epitaxial growth of (103)-oriented ferroelectric SrBi2Ta2O9thin films on Si(100), Appl. Phys. Lett78, 2922 (2001).
W. S. Kim, J. W. Kim, H. H. Park, and H. N. Lee, Fabrication and characterization of Pt-oxide electrode for ferroelectric random access memory application, Jpn. J. App. Phys. 39, 7097 (2000).
H. N. Lee, S. Senz, C. Harnagea, A. Pignolet, D. Hesse, and U. Gösele, Growth and characterization of non-c-oriented epitaxial ferroelectric SrBi2Ta2O9 films on buffered Si(100), Appl. Phys. Lett77, 3260 (2000).
H. N. Lee, A. Visinoiu, S. Senz, C. Harnagea, A. Pignolet, D. Hesse, and U. Gösele, Structural and electrical anisotropy of (001)-, (116)-, and (103)-oriented epitaxial SrBi2Ta2O9 thin films on SrTiO3 substrates grown by pulsed laser deposition, J. Appl. Phys88, 6658 (2000).
H. N. Lee, S. Senz, A. Visinoiu, A. Pignolet, D. Hesse, and U. Gösele, Epitaxial growth of non-c-oriented ferroelectric SrBi2Ta2O9 thin films on Si(100) substrates, Appl. Phys. A 71, 101 (2000).
H. N. Lee, Y. T. Kim, and S. H. Choh, Comparison of memory effect between YMnO3 and SrBi2Ta2O9 ferroelectric thin films deposited on Si substrates, Appl. Phys. Lett76, 1066 (2000).
H. N. Lee, I. S. Kim, Y. T. Kim, S. H. Choh, W. S. Kim, and H. H. Park, Ferroelectric Switching Properties of Highly c-Axis Oriented YMnO3 Gate Capacitors, J. Korean Phys. Soc. 35, S1260 (1999).
H. N. Lee, Y. T. Kim, and Young K. Park, Memory window of highly c-axis oriented ferroelectric YMnO3 thin films deposited on Y2O3/Si, Appl. Phys. Lett. 74, 3887 (1999).
H. N. Lee, S. H. Choh, D. S. Shin, and Y. T. Kim, Correlation between morphological and electrical characteristics of Pt/SrBi2Ta2O9/CeO2/Si capacitors, Ferroelectrics 232, 135 (1999).
H. N. Lee, Y. T. Kim, and S. H. Choh, Characteristics of Pt/SrBi2Ta2O9/Y2O3/Si ferroelectric gate capacitors, J. Korean Phys. Soc34, 454 (1999).
H. N. Lee, M.-H. Lim, Y. T. Kim, T. S. Kalkur, and S. H. Choh, Characteristics of metal/ferroelectric/insulator/semiconductor field effect transistors using a Pt/SrBi2Ta2O9/Y2O3/Si structure, Jpn. J. Appl. Phys. Part 1, 37 (3B), 1107 (1998).

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