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

Q. Zhang, G. Wan, V. Starchenko, G. Hu, E. M. Dufresne, H. Zhou, H. Jeen, I. C. Almazan, Y. Dong, H. Liu, A. R. Sandy, G. E. Sterbinsky, H. N. Lee, P. Ganesh, and D. Fong, Intermittent defect fluctuations in oxide heterostructures, Adv. Mater. DOI: 10.1002/adma.202305383 (2023).

D. Kim, J. Jeon, J. D. Park, X.-G. Sun, X. Gao, H. N. Lee, J. MacManus-Driscoll, D. H. Kwon, and S. Lee, Stable supercapacity binder-free TiO2(B) epitaxial  electrodes for all-solid-state nanobatteries, Nano Lett. 23, 6815 (2023).

Y. Zhong, S. Li, H. Liu, Y. Dong, K. Aido, Y. Arai, H. Li, W. Zhang, Y. Shi, Z. Wang, S. Shin, H. N. Lee, H. Miao, T. Kondo, and K. Okazaki, Testing electron–phonon coupling for the superconductivity in kagome metal CsV3Sb5, Nature Commun. 14, 1945 (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

2022

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. Mcguire, Endless 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 films, Adv. 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 La_0.7Sr_0.3MnO₃ 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. Lapano, O. Dyck, A. R. Lupini, W. Ko, H. Li, H. Miao, H. N. Lee, A.-P Li, M. Brahlek, S. 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 Mater. 4, 7607 (2021). 

A. Huon, S. Yoon, M. R. Fitzsimmons, T., R. Charlton, J. M. Ok, C. dela Cruz, and H. N. Lee, Effects 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. Lee, Twin-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, 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 magnetism, Phys. Rev. Mater. 4, 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. Brahlek, Strong spin-dephasing in a topological insulator- paramagnet heterostructure, APL 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

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).

Y. Zhang, M. Kim, J. Mravlje, C. Sohn, Y. Choi, J. Strempfer, Y. Hotta, A. Yasui, J. Nichols, H. N. Lee, and H. Wadati, Photoemission 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. Vasudevan, Thickness and strain dependence of piezoelectric coefficient in BaTiO₃ thin films, Phys. 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‐LiFe₅O₈ Nanocomposites, Adv. 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 junctions, Phys. 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 films, APL Mater. 7, 091106 (2019). 

G. Eres, C. M. Rouleau, Q. Lu, Z. Zhang, E. Benda, H. N. Lee, J. Z. Tischler, and D. D. Fong, Experimental 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 growth, Rev. Sci. Instrum. 90, 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 epitaxy, Phys. 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 nanoscale, APL Mater. 7, 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/(SrCoO_2.5)_n superlattices: Tunable ferromagnetic insulator, Phys. 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 SrCoO_2.5+d thin films, APL 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 heterostructure, Phys. 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 ferroelectrics, Adv. Mater. Interfaces, 6, 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 films, APL Mater. 7, 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. Adv. 5, 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 coordination, Nature 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 Sr₂Fe_1+xRe_1−xO₆ films, Adv. Mater. 31, 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 films, Phys. Rev. Mater. 3, 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 films, Phys. 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 films, J. 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/La_1-xSr_xMnO₃ superlattices, Phys. Rev. Mater. 2, 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 La_1-xCa_xMnO₃, Phys. 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 perovskites, J. Phys. Chem. C 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 dioxides, ACS 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 V₂O₅, Adv. 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 design, Adv. 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 substrate, Phys. 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 mismatch, Adv. 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 La_1.85Sr_0.15CuO₄, Nature Commun. 9, 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 transition, Phys. 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 study, ACS Catal. 7, 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. Rep. 7, 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 La_0.6Sr_0.4CoO_3-δ for fast oxygen reduction, J. Phys. Chem. C 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 level, Adv. 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 films, J. 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 Ca_1-xSr_xMn₇O₁₂ films, APL 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 conditions, ACS 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 structure, J. 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 Commun. 8, 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 stoichiometry, Appl. 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 films, Phys. 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 BiFeO₃, Adv. Mater. 1700790 (2017).

E. Guo, T. Charlton, H. Ambaye, R. Desautels, H. N. Lee, and M. R. Fitzsimmons, Orientation control of interfacial magnetism at La_0.67Sr_0.33MnO₃/SrTiO₃ interfaces, ACS 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 superlattices, Nano Lett. 17, 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 Lett. 17, 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} facets, Adv. Sci. 1700045 (2017).

W. S. Choi, K. T. Kang, H. Jeen, Z. Gai, and H. N. Lee, Highly insulating ferromagnetic cobaltite heterostructures, Current Appl. Phys. 17, 722 (2017).

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

Z. Diao, H. N. Lee, M. F. Chisholm, and R. Jin, Thermoelectric properties of Bi₂Sr₂Co₂O_y thin films and single crystals, Physica 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 switching, Nano Lett. 17, 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 Nanostructures, Adv. Mater. Interfaces, 4, 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 ferroelectric, Phys. 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 SrTiO₃, Phys. Rev. Lett. 117, 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 mismatch, Sci. Rep. 6, 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 dioxide, Phys. Rev. B 94, 155129 (2016).

J. Thompson, J. Hwang, S. Ryee, J. Gruenewald­, J. G. Connell, J. Nichols, S. Lee, M. J. Han_, H. N. Lee, D.-W. Kim, and S. S. A. Seo, Enhanced metallic properties of SrRuO₃ thin films via kinetically controlled pulsed laser epitaxy, Appl. Phys. Lett. 109, 161902 (2016).

B. Kim, D. Seol, S. Lee, H. N. Lee, and Y. Kim, Ferroelectric-like hysteresis loop originated from non-ferroelectric effects, Appl. Phys. Lett. 109, 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 materials, Adv. Electro. Mater. 2, 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 microscopy, Sci. 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 heterostructures, Nature 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 deficiency, J. Am. Chem. Soc. 138, 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 doping, Sci. Rep. 6, 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 studies, Cryst. Growth Des. 16, 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 superlattices, Phys. 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 growth, Appl. Phys. Lett. 108, 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 perovskites, J. Am. Chem. Soc. 138, 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 films, Adv. Funct. Mater. 26, 1564 (2016).

S. Lee, I. N. Ivanov, J. K. Keum, and H. N. Lee, Epitaxial stabilization and phase instability of VO₂ polymorphs, Sci. 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 vacuum, Sci. 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 films, Topics 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 Descriptors, J. 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 bias, Adv. 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 interface, Adv. Electron. Mater. 2, 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 polymorphs, APL Mater. 3, 126109 (2015).

T. L. Meyer, L. Jiang, S. Park, T. Egami, and H. N. Lee, Strain-relaxation and critical thickness of epitaxial La_1.85Sr_0.15CuO₄ films, APL Mater. 3, 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 CeCu_6-xT_x (T = Ag, Pd), Phys. Rev. B92, 214421 (2015).

H. Jeen and H. N. Lee, Structural evolution of epitaxial SrCoO_x films during topotactic phase transition, AIP 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 SrCoO_3-δ thin films, J. Appl. Phys. 118, 085313 (2015).

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

H. N. Lee, A new class of materials, International Innovations, 173, 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 films, J. Phys. Chem. Lett. 6, 487 (2015).

W. S. Choi and H. N. Lee, Strain tuning of electronic structure in Bi₄Ti₃O₁₂-LaCoO₃ epitaxial thin films, Phys. 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 superlattices, J. Phys. D: Appl. Phys. 48, 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 pressure, ACS 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 laser, Appl. Phys. Lett. 106, 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 films, Appl. Phys. Lett. 105, 223515 (2014).

Mitra, T. Meyer, H. N. Lee, and F. A. Reboredo, Oxygen diffusion pathways in brownmillerite SrCoO_2.5: Influence of structure and chemical potential, J. Chem. Phys. 141, 084710 (2014).

W. Choi, H. Ohta, and H. N. Lee, Thermopower enhancement by fractional layer control in 2D oxide superlattices, Adv. Mater. 26, 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 approach, Nature: 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 superlattices, Nature: 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 ferroelectricity, Nature Commun. 5, 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 films, Chem. 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) heterostructures, APL 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 SrCoO_2.5 – A Combined hybrid functional and LSDA + U study, J. Phys.: Condens. Matter 26, 036004 (2014). 

2013

L. Jiang, W. S. Choi, H. Jeen, S. Dong, Y. S. Kim, M. G. Han, Y. Zhu, S. V. Kalinin, E. Dagotto, T. Egami, and H. N. Lee, Tunneling electroresistance induced by interfacial phase transitions in ultrathin oxide heterostructures, Nano Lett. 13, 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 capacitor, Acta 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 SrCoO_x epitaxial thin films studied by real-time optical spectroscopy and first-principles calculations, Phys. Rev. Lett. 111, 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 reaction, Adv. 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 SrCoO_x oxygen sponge, Nature 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 LuFeO₃films, Phys. 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 SrCoO_2.5 to the perovskite SrCoO_3-δ, Adv. Mater. 25, 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 study, Phys. 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 heterointerfaces, Adv. Mater. 24, 6423 (2012).

T. Choi, L. Jiang, S. Lee, T. Egami, and H. N. Lee, High rectification and photovoltaic effect in oxide nanojunctions, New J. Phys. 14, 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 mobilities, Nano 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 heterostructures, Appl. 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. Lett. 100, 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 substitution, Nature 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 control, Adv. Mater. 24, 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 superlattices, New J. Phys. 14, 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 transport, Adv. Mater. 23, 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 microscopy, Appl. 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 superlattices, Phys. 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 superlattices, Phys. 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 PbZr_0.2Ti_0.8O₃ 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 annealing, J. Kor. Phys. Soc. 58, 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 charges, Nano 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. Lett. 105, 197602 (2010).
D. J. Singh, S. S. A. Seo, and H. N. Lee, Optical properties of ferroelectric Bi₄Ti₃O₁₂, Phys. 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. Lett. 97, 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 CaMnO₃, Phys. 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. Soc. 55, 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. Phys. 42, 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. Lett. 102, 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 Microanalysis, 15, 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. Lett. 92, 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 fields, Phys. Rev. Lett. 100, 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. Lett. 99, 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 BiFe_0.5Cr_0.5O₃ 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. Inst. 77, 73702 (2006).
D. H. Kim, H. M. Christen, M. Varela, H. N. Lee, and D. H. Lowndes, Effect of strain on structure and charge order transitions in epitaxial Bi_0.4Ca_0.6MnO₃ 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 substrates, Phys. 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, Nature, 433, 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, Ba_0.5Sr_0.5TiO₃ thin films, and (BaTiO₃)₅/(SrTiO₃)₅ superlattice grown on SrRuO₃/SrTiO₃(001) substrates, Thin 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. Res. 19, 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 Bi_3.25La_0.75Ti₃O₁₂ films using off-cut single crystal substrates, Integrated Ferroelectrics, 68, 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 areas, Rev. Sci. Instrum. 74, 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 Bi_3.25La_0.75Ti₃O₁₂ versus non-c-axis oriented SrBi₂Ta₂O₉ thin films on Si(100), Ferroelectrics, 288, 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. Phys. 91, 10157 (2002).
H. N. Lee and D. Hesse, Anisotropic ferroelectric properties of epitaxially twinned Bi_3.25La_0.75Ti₃O₁₂ 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 SrRuO₃ bottom 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. Soc. 21, 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. Lett. 78, 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. Lett. 77, 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. Phys. 88, 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. Lett. 76, 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. Soc. 34, 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).