Publications

2020

Phase Diagram of Infinite Layer Praseodymium Nickelate Pr1−xSrxNiO2 Thin Films

M. Osada, B. Y. Wang, K. Lee, D. Li, and H. Y. Hwang, arXiv:2010.16101.

Charge Order Textures Induced by Non-Linear Lattice Coupling in a Half-Doped Manganite

I. E. Baggari, D. J. Baek, M. J. Zachman, D. Lu, Y. Hikita, H. Y. Hwang, E. A. Nowadnick, and L. F. Kourkoutis, arXiv:2010.12610.

Spectral Weight Reduction of Two-Dimensional Electron Gases at Oxide Surfaces Across the Ferroelectric Transition

P. Jaiban, M. -H. Lu, T. Eknapakul, S. Chaiyachad, S. H. Yao, N. Pisitpipathsin, M. Unruan, S. Siriroj, R. -H. He, S. -K. Mo, A. Watcharapasorn, R. Yimnirun, Y. Tokura, Z. -X. Shen, H. Y. Hwang, S. Maensiri, and W. Meevasana, Sci. Rep. 10, 16834 (2020).

Universal Behavior of the Bosonic Metallic Ground State in a Two-Dimensional Superconductor

Z. Chen, B. Y. Wang, A. G. Swartz, H. Yoon, Y. Hikita, S. Raghu, and H. Y. Hwang, arXiv:2009.12403.

Giant Strain Gradient Elasticity in SrTiO3 Membranes: Bending Versus Stretching

V. Harbola, S. Crossley, S. S. Hong, D. Lu, Y. A. Birkholzer, Y. Hikita, and H. Y. Hwang, arXiv:2009.11427.

Beyond Substrates: Strain Engineering of Ferroelectric Membranes

D. Pesquera, E. Parsonnet, A. Qualls, R. J. Xu, A. J. Gubser, J. Kim, Y. H. Jiang, G. Velarde, Y.-L. Huang, H. Y. Hwang, R. Ramesh, and L. W. Martin, Adv. Mater. DOI: 10.1002/adma.202003780 (2020).

Universal Bound to the Amplitude of the Vortex Nernst Signal in Superconductors

C. W. Rischau, Y. Li, B. Fauque, H. Inoue, M. Kim, C. Bell, H. Y. Hwang, A. Kapitulnik, and K. Behnia, arXiv:2007.01110.

A Superconducting Praseodymium Nickelate with Infinite Layer Structure

M. Osada, B. Y. Wang, B. H. Goodge, K. Lee, H. Yoon, K. Sakuma, D. Li, M. Miura, L. F. Kourkoutis, and H. Y. Hwang, Nano Lett. 20, 5735 (2020).

Superconducting Dome in Nd1xSrxNiO2 Infinite Layer Films

D. Li, B. Y. Wang, K. Lee, S. P. Harvey, M. Osada, B. H. Goodge, L. F. Kourkoutis, and H. Y. Hwang, Phys. Rev. Lett. 125, 027001 (2020).

Strain-Induced Room-Temperature Ferroelectricity in SrTiO3 Membranes

R. Xu, J. Huang, E. S. Barnard, S. S. Hong, P. Singh, E. K. Wong, T. Jansen, V. Harbola, J. Xiao, B. Y. Wang, S. Crossley, D. Lu, S. Liu, and H. Y. Hwang, Nat. Commun. 11, 3141 (2020).

Doping Evolution of the Mott-Hubbard Landscape in Infinite-Layer Nickelates

B. H. Goodge, D. Li, M. Osada, B. Y. Wang, K. Lee, G. A. Sawatzky, H. Y. Hwang, and L. F. Kourkoutis, arXiv:2005.02847.

Aspects of the Synthesis of Thin Film Superconducting Infinite-Layer Nickelates

K. Lee, B. H. Goodge, D. Li, M. Osada, B. Y. Wang, Y. Cui, L. F. Kourkoutis, and H. Y. Hwang, APL Mater. 8, 041107 (2020). Editor's Pick.

Extreme Tensile Strain States in La0.7Ca0.3MnO3 Membranes (News Article)

S. S. Hong, M. Gu, M. Verma, V. Harbola, B. Y. Wang, D. Lu, A. Vailionis, Y. Hikita, R. Pentcheva, J. M. Rondinelli, and H. Y. Hwang, Science 368, 71 (2020).

Electrostatic Modulation of the Lateral Carrier Density Profile in Field Effect Devices with Non-Linear Dielectrics

E. Persky, H. Yoon, Y. Xie, H. Y. Hwang, J. Ruhman, and B. Kalisky, arXiv:2003.01756.

Theory of Rare-Earth Infinite Layer Nickelates

E. Been, W. -S. Lee, H. Y. Hwang, Y. Cui, J. Zaanen, T. Devereaux, B. Moritz, and C. Jia, arXiv:2002.12300.

Robust dx2y2-Wave Superconductivity of Infinite-Layer Nickelates

X. Wu, D. Di Sante, T. Schwemmer, W. Hanke, H. Y. Hwang, S. Raghu, and R. Thomale, Phys. Rev. B 101, 060504(R) (2020). Editor's Suggestion.

Electrotunable Liquid Sulfur Microdroplets

G. Zhou, A. Yang, Y. Wang, G. Gao, A. Pei, X. Yu, Y. Zhu, L. Zong, B. Liu, J. Xu, N. Liu, J. Zhang, Y. Li, L. -W. Wang, H. Y. Hwang, M. L. Brongersma, S. Chu, and Y. Cui, Nat. Commun. 11, 606 (2020).

Electrochemical Generation of Liquid and Solid Sulfur on Two-Dimensional Layered Materials with Distinct Areal Capacities

A. Yang, G. Zhou, X. Kong, R. A. Vilá, A. Pei, Y. Wu, X. Yu, X. Zheng, C. -L. Wu, B. Liu, H. Chen, Y. Xu, D. Chen, Y. Li, S. Fakra, H. Y. Hwang, J. Qin, S. Chu, and Y. Cui, Nat. Nanotechnol. 15, 231 (2020).

Electronic Structure of the Parent Compound of Superconducting Infinite-Layer Nickelates (News Article)

M. Hepting, D. Li, C. J. Jia, H. Lu, E. Paris, Y. Tseng, X. Feng, M. Osada, E. Been, Y. Hikita, Y.-D. Chuang, Z. Hussain, K. J. Zhou, A. Nag, M. Garcia-Fernandez, M. Rossi, H. Y. Huang, D. J. Huang, Z. X. Shen, T. Schmitt, H. Y. Hwang, B. Moritz, J. Zaanen, T. P. Devereaux, and W. S. Lee, Nat. Mater. 4, 381 (2020).

Magnetism and Conductivity Along Structural Domain Walls of SrTiO3

Y. Frenkel, Y. Xie, H. Y. Hwang, and B. Kalisky, J. Supercond. Nov. Magn. 33, 195 (2020).

2019

Heteroepitaxial Vertical Perovskite Hot-Electron Transistors Down to the Monolayer Limit

B. S. Y. Kim, Y. Hikita, T. Yajima, and H. Y. Hwang, Nat. Commun. 10, 5312 (2019).

Ferromagnetic Resonance of Perpendicularly Magnetized Tm3Fe5O12/Pt Heterostructures

S. Crossley, A. Quindeau, A. G. Swartz, E. R. Rosenberg, L. Beran, C. O. Avci, Y. Hikita, C. A. Ross, and H. Y. Hwang, Appl. Phys. Lett. 115, 172402 (2019).

A Two-Dimensional MoS2 Catalysis Transistor by Solid-State Ion Gating Manipulation and Adjustment (SIGMA)

Y. Wu, S. Ringe, C. -L. Wu, W. Chen, A. Yang, H. Chen, M. Tang, G. Zhou, H. Y. Hwang, K. Chan, and Y. Cui, Nano Lett. 19, 7293 (2019).

A Termination-Insensitive and Robust Electron Gas at the CaHfO3/SrTiO3 Heterointerface

M. Zhang, K. Du, T. S. Ren, H. Tian, Z. Zhang, H. Y. Hwang, and Y. W. Xie, Nat. Commun. 10, 4026 (2019).

Superconductivity in an Infinite-Layer Nickelate (News Article)

D. Li, K. Lee, B. Y. Wang, M. Osada, S. Crossley, H. R. Lee, Y. Cui, Y. Hikita, and H. Y. Hwang, Nature 572, 624 (2019).

All-Oxide Ferromagnetic Resonance and Spin Pumping with SrIrO3

S. Crossley, A. G. Swartz, K. Nishio, Y. Hikita, and H. Y. Hwang, Phys. Rev. B 100, 115163 (2019).

Freestanding Crystalline YBa2Cu3O7x Heterostructure Membranes

Z. Chen, B. Y. Wang, B. H. Goodge, D. Lu, S. S. Hong, D. Li, L. F. Kourkoutis, Y. Hikita, and H. Y. Hwang, Phys. Rev. Mater. 3, 060801(R) (2019).

Large-Area Crystalline BaSnO3 Membranes with High Electron Mobilities

P. Singh, A. G. Swartz, D. Lu, S. S. Hong, K. Lee, K. Nishio, Y. Hikita, and H. Y. Hwang, ACS Appl. Electron. Mater. 1, 1269-1274 (2019).

Delta-Doped SrTiO3 Top-Gated Field Effect Transistor

H. Inoue, H. Yoon, T. A. Merz, A. G. Swartz, S. S. Hong, Y. Hikita, and H. Y. Hwang, Appl. Phys. Lett. 114, 231605 (2019). Editor's Pick.

Freestanding Oxide Ferroelectric Tunnel Junction Memories Transferred onto Silicon

D. Lu, S. Crossley, R. Xu, Y. Hikita, and H. Y. Hwang, Nano Lett. 19, 3999 (2019).

Probing the Band Alignment in Rectifying SrIrO3/Nb:SrTiO3 Heterostructures

B. S. Y. Kim, Y. A. Birkhölzer, X. Feng, Y. Hikita, and H. Y. Hwang, Appl. Phys. Lett. 114, 133504 (2019).

Oxygen Evolution Reaction Activity in IrOx/SrIrO3 Catalysts: Correlations between Structural Parameters and the Catalytic Activity

K. Lee, M. Osada, H. Y. Hwang, and Y. Hikita, J. Phys. Chem. Lett. 10, 1516 (2019).

Strain-Tunable Magnetism at Oxide Domain Walls

D. V. Christensen, Y. Frenkel, Y. Z. Chen, Y. W. Xie, Z. Y. Chen, Y. Hikita, A. Smith, L. Klein, H. Y. Hwang, N. Pryds, and B. Kalisky, Nat. Phys. 15, 269 (2019).

2018

Carrier Density and Disorder Tuned Superconductor-Metal Transition in a Two-Dimensional Electron System

Z. Chen, A. G. Swartz, H. Yoon, H. Inoue, T. Merz, D. Lu, Y. Xie, H. Yuan, Y. Hikita, S. Raghu, and H. Y. Hwang, Nat. Commun. 9, 4008 (2018).

Measurement of Elastoresistivity at Finite Frequency by Amplitude Demodulation

A. T. Hristov, J. C. Palmstrom, J. A. W. Straquadine, T. A. Merz, H. Y. Hwang, and I. R. Fisher, Rev. Sci. Instrum. 89, 103901 (2018).

Observation of signatures of subresolution defects in two-dimensional superconductors with a scanning SQUID

H. Noad, C. A. Watson, H. Inoue, M. Kim, H. K. Sato, C. Bell, H. Y. Hwang, J. R. Kirtley, and K. A. Moler, Phys. Rev. B 98, 064510 (2018).

Superconducting tunneling spectroscopy of spin-orbit coupling and orbital depairing in Nb:SrTiO3

A. G. Swartz, A. K. C. Cheung, H. Yoon, Z. Chen, Y. Hikita, S. Raghu, and H. Y. Hwang, Phys. Rev. Lett. 121, 167003 (2018).

Ultralow Damping in Nanometer-Thick Epitaxial Spinel Ferrite Thin Films

S. Emori, D. Yi, S. Crossley, J. J. Wisser, P. P. Balakrishnan, B. Khodadadi, P. Shafer, C. Klewe, A. T. N'Diaye, B. T. Urwin, K. Mahalingam, B. M. Howe, H. Y. Hwang, E. Arenholz, and Y. Suzuki, Nano Lett. 18, 4273 (2018).

Spontaneous ionic polarization in ammonia-based ionic liquid

K. -J. Kim, H. Yuan, H. Jang, B. Kim, D. Seoung, Y. Hikita, H. Y. Hwang, and J. -S. Lee, ACS Appl. Energy Mater. 1, 2717 (2018).

Synthesis and electronic properties of Fe2TiO5 epitaxial thin films

M. Osada, K. Nishio, H. Y. Hwang, and Y. Hikita, APL Mater. 6, 056101 (2018).

Atomically engineered epitaxial anatase TiO2 metal-semiconductor field-effect transistors

B. S. Y. Kim, M. Minohara, Y. Hikita, C. Bell, and H. Y. Hwang, Appl. Phys. Lett. 112, 133506 (2018). Editor's Pick.

Gate-Induced Metal-Insulator Transition in MoS2 by Solid Superionic Conductor LaF3

C. -L. Wu, H. Yuan, Y. Li, Y. Gong, H. Y. Hwang, and Y. Cui, Nano Lett. 4, 2387 (2018).

Tuning of Plasmons in Transparent Conductive Oxides by Carrier Accumulation

X. Liu, J. -H. Kang, H. Yuan, J. Park, Y. Cui, H. Y. Hwang, and M. L. Brongersma, ACS Photonics 5, 1493 (2018).

Gate-Induced Interfacial Superconductivity in 1T-SnSe2

J. Zeng, E. Liu, Y. Fu, Z. Chen, C. Pan, C. Wang, M. Wang, Y. Wang, K. Xu, S. Cai, X. Yan, Y. Wang, X. Liu, P. Wang, S. -J. Liang, Y. Cui, H. Y. Hwang, H. Yuan, and F. Miao, Nano Lett. 18, 1410 (2018).

Polaronic Behavior in a Weak Coupling Superconductor

A. G. Swartz, H. Inoue, T. A. Merz, Y. Hikita, S. Raghu, T. P. Devereaux, S. Johnston and H. Y. Hwang, Proc. Natl. Acad. Sci. U. S. A. 115, 1475 (2018).

Strain Tuning in Complex Oxide Epitaxial Films Using an Ultrathin Strontium Aluminate Buffer Layer

D. Lu, Y. Hikita, D. J. Baek, T. A. Merz, H. K. Sato, B. Kim, T. Yajima, C. Bell, A. Vailionis, L. F. Kourkoutis, and H. Y. Hwang, Phys. Stat. Solidi RRL 12, 1700339 (2018).

2017

Two-dimensional limit of crystalline order in perovskite membrane films

S. S. Hong, J. H. Yu, D. Lu, A. F. Marshall, Y. Hikita, Y. Cui, and H. Y. Hwang, Sci. Adv. 3, eaao5173 (2017).

Gated Tuned Superconductivity and Phonon Softening in Mono- and Bi-layer MoS2

Y. J. Fu, E. F. Liu, H. T. Yuan, P. Z. Tang, B. Lian, G. Xu, J. W. Zeng, Z. Y. Chen, Y. J. Wang, W. Zhou, K. Xu, A. Y. Gao, C. Pan, M. Wang, B. G. Wang, S.-C. Zhang, Y. Cui, H. Y. Hwang, D. Y. Xing, and F. Miao, NPJ Quantum Mater. 2, 52 (2017).

Imaging and Tuning Polarity at SrTiO3 Domain Walls

Y. Frenkel, N. Haham, Y. Shperber, C. Bell, Y. W. Xie, Z. Y. Chen, Y. Hikita, H. Y. Hwang, E. K. H. Salje, and B. Kalisky, Nat. Mater. 16, 1203 (2017).

Mapping Cation Diffusion through Lattice Defects in Epitaxial Oxide Thin Films on the Water-soluble Buffer Layer Sr3Al2O6 using Atomic Resolution Electron Microscopy

D. J. Baek, D. Lu, Y. Hikita, H. Y. Hwang, and L. F. Kourkoutis, APL Mater. 5, 096108 (2017).

Ultrathin Epitaxial Barrier Layer to Avoid Thermally Induced Phase Transformation in Oxide Heterostructures

D . J. Baek, D. Lu, Y. Hikita, H. Y. Hwang, and L. F. Kourkoutis, ACS Appl. Mater. Interfaces 9, 54 (2017).

Ubiquitous strong electron phonon coupling at the interface of FeSe/SrTiO3

C. -F. Zhang, Z. -K. Liu, Z. -Y. Chen, Y. W. Xie, R.-H. He, S. -J. Tang, J. -F. He, W. Li, T. Jia, S. N. Rebec, E. Y. Ma, H. Yan, M. Hashimoto, D. -H. Lu , S.-K. Mo, Y. Hikita, R. G. Moore, H. Y. Hwang, D.-H. Lee, and Z.-X. Shen, Nat. Commun. 8, 14468 (2017).

Enhancing the Barrier Height in Oxide Schottky Junctions Using Interface Dipoles

T. Tachikawa, H. Y. Hwang, and Y. Hikita, Appl. Phys. Lett. 111, 091602 (2017).

Dielectric collapse at the LaAlO3/SrTiO3 (001) heterointerface under applied electric field

M. Minohara, Y. Hikita, C. Bell, H. Inoue, M. Hosoda, H. K. Sato, H. Kumigashira, M. Oshima, E. Ikenaga, and H. Y. Hwang, Sci. Rep. 7, 9516 (2017).

Electrical tuning of a quantum plasmonic resonance

X. Liu, J.-H. Kang, H. T. Yuan, J. Park, S. J. Kim, Y. Cui, H. Y. Hwang, and M. L. Brongersma, Nat. Nanotechnol. 12, 866 (2017).

High Electron Mobility and Quantum Oscillations in Non-encapsulated Ultrathin Semiconducting Bi2O3Se

J. Wu, H. T. Yuan, M. Meng, C. Chen, Y. Sun, Z. Chen, W. Dang, C. Tan, Y. Liu, J. Yin, Y. Zhou, S. Huang, H. Q. Xu, Y. Cui, H. Y. Hwang, Z. Liu, Y. Chen, B. Yan, and H. Peng, Nat. Nanotechnol. 12, 530 (2017).

2016

Orientation-resolved domain mapping in tetragonal SrTiO3 using polarized Raman spectroscopy

D. J. Gray, Jr., T. A. Merz, Y. Hikita, H. Y. Hwang, and H. Mabuchi, Phys. Rev. B 94, 214107 (2016).

Variation in Superconducting Transition Temperature due to Tetragonal Domains in Two-Dimensionally Doped SrTiO3

H. Noad, E. M. Spanton, K. C. Nowack, H. Inoue, M. Kim, T. A. Merz, C. Bell, Y. Hikita, R. Xu, W. Liu, A. Vailionis, H. Y. Hwang and K. A. Moler, Phys. Rev. B 94, 174516 (2016).

Dual-Gate Modulation of Carrier Density and Disorder in an Oxide Two-Dimensional Electron System

Z. Chen, H. T. Yuan, Y. Xie, D. Lu, H. Inoue, Y. Hikita, C. Bell and H. Y. Hwang, Nano Lett. 16, 6130 (2016).

Synthesis of Freestanding Single-Crystal Perovskite Films and Heterostructures by Etching of Sacrificial Water-Soluble Layers

D. Lu, D. J. Baek, S. S. Hong, L. F. Kourkoutis, Y. Hikita and H. Y. Hwang, Nature Mater. 15, 1255 (2016).

A Highly Active and Stable IrOx/SrIrO3 Catalyst for the Oxygen Evolution Reaction

L. C. Seitz, C. F. Dickens, K. Nishio, Y. Hikita, J. Montoya, A. Doyle, C. Kirk, A. Vojvodic, H. Y. Hwang, J. K. Norskov and T. F. Jaramillo, Science 353, 1011 (2016).

Defect Control of Conventional and Anomalous Electron Transport at Complex Oxide Interfaces

F. Gunkel, C. Bell, H. Inoue, B. Kim, A. G. Swartz, T. A. Merz, Y. Hikita, S. Harashima, H. K. Sato, M. Minohara, S. Hoffmann-Eifert, R. Dittmann and H. Y. Hwang, Phys. Rev. X 6, 031035 (2016).

Anisotropic Transport at the LaAlO3/SrTiO3 Interface Explained by Microscopic Imaging of Channel-Flow over SrTiO3 Domains

Y. Frenkel, N. Hacham, Y. Shperber, C. Bell, Y. W. Xie, Z. Y. Chen, Y. Hikita, H. Y. Hwang and B. Kalisky, ACS Appl. Mater. Interfaces 8, 12514 (2016).

Photoinduced Demagnetization and Insulator-to-Metal Transition in Ferromagnetic Insulating BaFeO3 Thin Films

T. Tsuyama, S. Chakraverty, S. Macke, N. Pontius, C. Schuessler-Langeheine, H. Y. Hwang, Y. Tokura and H. Wadati, Phys. Rev. Lett. 116, 256402 (2016).

High Responsivity Phototransistors Based on Few-Layer ReS2 for Weak Signal Detection

E. Liu, M. Long, J. Zeng, W. Luo, Y. Wang, Y. Pan, W. Zhou, B. Wang, W. Hu, Z. Ni, Y. You, X. Zhang, S. Qin, Y. Shi, K. Watanabe, T. Taniguchi, H. T. Yuan, H. Y. Hwang, Y. Cui, F. Miao and D. Xing, Adv. Funct. Mater. 26, 1938 (2016).

Evolution of the Valley Position in Bulk Transition-Metal Chalcogenides and Their Monolayer Limit

H. T. Yuan, Z. Liu, G. Xu, B. Zhou, S. Wu, D. Dumcenco, K. Yan, Y. Zhang, S.-K. Mo, P. Dudin, V. Kandyba, M. Yablonskikh, A. Barinov, Z. Shen, S. Zhang, Y. Huang, X. Xu, Z. Hussain, H. Y. Hwang, Y. Cui and Y. Chen, Nano Lett. 16, 4738 (2016).

Magnetic anisotropy, damping, and interfacial spin transport in Pt/LSMO bilayers

H. K. Lee, I. Barsukov, A. G. Swartz, B. Kim, L. Yang, H. Y. Hwang and I. N. Krivorotov, AIP Adv. 6, 055212 (2016).

Depth resolved domain mapping in tetragonal SrTiO3 by micro-Laue diffraction

T. A. Merz, H. Noad, R. Xu, H. Inoue, W. Liu, Y. Hikita, A. Vailionis, K. A. Moler and H. Y. Hwang, Appl. Phys. Lett. 108, 182901 (2016).

Thermodynamic guiding principles in selective synthesis of strontium iridate Ruddlesden-Popper epitaxial films

K. Nishio, H. Y. Hwang and Y. Hikita, APL Mater. 4, 036102 (2016).

Band Edge Engineering of Oxide Photoanodes for Photoelectrochemical Water Splitting: Integration of Subsurface Dipoles with Atomic-Scale Control

Y. Hikita, K. Nishio, L. C. Seitz, P. Chakthranont, T. Tachikawa, T. F. Jaramillo and H. Y. Hwang, Adv. Energy Mater. 6, 1502154 (2016).

2015

Origin of the Magnetoresistance in Oxide Tunnel Junctions Determined through Electric Polarization Control of the Interface

H. Inoue, A. G. Swartz, N. J. Harmon, T. Tachikawa, Y. Hikita, M. E. Flatte and H. Y. Hwang, Phys. Rev. X 5, 041023 (2015).

Tuning Band Alignment Using Interface Dipoles at the Pt/Anatase TiO2 Interface

T. Tachikawa, M. Minohara, Y. Hikita, C. Bell and H. Y. Hwang, Adv. Mater. 27, 7458 (2015).

Inelastic X-ray Scattering in Heterostructures: Electronic Excitations in LaAlO3/SrTiO3

K. O. Ruotsalainen, C. J. Sahle, T. Ritschel, J. Geck, M. Hosoda, C. Bell, Y. Hikita, H. Y. Hwang, T. T. Fister, R. A. Gordon, K. Hamalainen, M. Hakala and S. Huotari, J. Phys. Condens. Matter 27, 335501 (2015).

Direct Imaging of Nanoscale Conductance Evolution in Ion-Gel-Gated Oxide Transistors

Y. Ren, H. T. Yuan, X. Y. Wu, Z. Y. Chen, Y. Iwasa, Y. Cui, H. Y. Hwang and K. Lai, Nano Lett. 15, 4730 (2015).

Optical Study of Tetragonal Domains in LaAlO3/SrTiO3

Z. Erlich, Y. Frenkel, J. Drori, Y. Shperber, C. Bell, H. K. Sato, M. Hosoda, Y. W. Xie, Y. Hikita, H. Y. Hwang and B. Kalisky, J. Supercond. Nov. Magn. 28, 1017 (2015).

Polarisation-sensitive Broadband Photodetector using a Black Phosphorus Vertical p-n Junction

H. T. Yuan, X. Liu, F. Afshinmanesh, W. Li, G. Xu, J. Sun, B. Lian, A. G. Curto, G. Ye, Y. Hikita, Z. Shen, S.-C. Zhang, X. Chen, M. Brongersma, H. Y. Hwang and Y. Cui, Nat. Nanotech. 10, 707 (2015).

Pressure induced metallization with absence of structural transition in layered molybdenum diselenide

Z. Zhao, H. Zhang, H. T. Yuan, S. Wang, Y. Lin, Q. Zeng, G. Xu, Z. Liu, G. K. Solanki, K. D. Patel, Y. Cui, H. Y. Hwang and W. L. Mao, Nature Commun. 6, 7312 (2015).

Integrated Digital Inverters Based on Two-dimensional Anisotropic ReS2 Field-effect Transistors

E. Liu, Y. Fu, Y. Wang, Y. Feng, H. Liu, X. Wan, W. Zhou, B. Wang, L. Shao, Y.-S. Huang, Z. Cao, L. Wang, A. Li, J. Zeng, F. Song, X. Wang, Y. Shi, H. T. Yuan, H. Y. Hwang, Y. Cui, F. Miao and D. Xing, Nat. Commun. 6, 6991 (2015).

Controlling Band Alignments by Artificial Interface Dipoles at Perovskite Heterointerfaces

T. Yajima, Y. Hikita, M. Minohara, C. Bell, J. A. Mundy, L. F. Kourkoutis, D. A. Muller, H. Kumigashira, M. Oshima and H. Y. Hwang, Nat. Commun. 6, 6759 (2015).

Electrically Tunable Coherent Optical Absorption in Graphene with Ion Gel

V. Thareja, J. Kang, H. T. Yuan, K. M. Milaninia, H. Y. Hwang, Y. Cui, P. G. Kik and M. L. Brongersma, Nano Lett. 15, 1570 (2015).

X-Ray Spectroscopic Study of BaFeO3 Thin Films: an Fe4+ Ferromagnetic Insulator

T. Tsuyama, T. Matsuda, S. Chakraverty, J. Okamoto, E. Ikenaga, A. Tanaka, T. Mizokawa, H. Y. Hwang, Y. Tokura and H. Wadati, Phys. Rev. B 91, 115101 (2015).

Room Temperature Optical Anisotropy of a LaMnO3 Thin-film Induced by Ultra-short Pulse Laser

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, Appl. Phys. Lett 106, 092907 (2015).

Enhanced Electrical Transparency by Ultrathin LaAlO3 Insertion at Oxide Metal/Semiconductor Heterointerfaces

T. Yajima, M. Minohara, C. Bell, H. Kumigashira, M. Oshima, H. Y. Hwang and Y. Hikita, Nano Lett. 15, 1622 (2015).

Broadband Linear-Dichroic Photodetector in a Black Phosphorus Vertical p-n Junction

H. T. Yuan, X. Liu, F. Afshinmanesh, W. Li, G. Xu, J. Sun, B. Lian, G. Ye, Y. Hikita, Z. Shen, S. Zhang, X. Chen, M. Brongersma, H. Y. Hwang and Y. Cui, Nat. Nanotechnol. 10, 707 (2015).

2014

Quantification and Impact of Nonparabolicity of the Conduction Band of Indium Tin Oxide on its Plasmonic Properties

X. Liu, J.-H. Park, J.-H. Kang, H. T. Yuan, Y. Cui, H. Y. Hwang and Mark L. Brongersma, Appl. Phys. Lett. 105, 181117 (2014).

Visible Light Enhanced Field Effect at the LaAlO3/SrTiO3 Interface

Y. Lei, Y. Z. Chen, Y. W. Xie, S. H. Wang, Y. Li, J. Wang, B. G. Shen, N. Pryds, H. Y. Hwang and J. R. Sun, Nat. Commun. 5, 5554 (2014).

Large Scale Production of Graphene Nanoribbons from Electrospun Polymers

N. Liu, K. P. Kim, P. C. Hsu, A. N. Sokolov, F. L. Yap, H. T. Yuan, Y. W. Xie, H. Yan, Y. Cui, H. Y. Hwang and Z. Bao, J. Am. Chem. Soc. 136, 17284 (2014).

Atomically Engineered Metal-Insulator Transition at the TiO2/LaAlO3 Heterointerface

M. Minohara, T. Tachikawa, Y. Nakanishi, Y. Hikita, L. F. Kourkoutis, J.-S. Lee, C.-C. Kao, M. Yoshita, H. Akiyama, C. Bell, and H. Y. Hwang, Nano Lett. 14, 6743 (2014).

Spin Dependent Transport Across Co/LaAlO3/SrTiO3 Heterojunctions

A. G. Swartz, S. Harashima, Y. W. Xie, D. Lu, B. J. Kim, C. Bell, Y. Hikita, and H. Y. Hwang, Appl. Phys. Lett. 105, 032406 (2014).

Quantum Longitudinal and Hall Transport at the LaAlO3/SrTiO3 Interface

Y. W. Xie, C. Bell, M. Kim, H. Inoue, Y. Hikita, and H. Y. Hwang, Solid State Commun. 197, 25 (2014).

Generation and electric control of spin-valley coupled circular photogalvanic current in WSe2

H. T. Yuan, X. Q. Wang, B. Lian, H. Zhang, X. Fang, B. Shen, G. Xu, Y. Xu, S. C. Zhang, H. Y. Hwang, and Y. Cui, Nat. Nanotechnol. 9, 851 (2014).

Spatial Density Profile of Electrons near the LaAlO3/SrTiO3 Heterointerface Revealed by Time-Resolved Photoluminescence Spectroscopy

Y. Yamada, H. K. Sato, Y. Hikita, H. Y. Hwang, and Y. Kanemitsu, Appl. Phys. Lett. 104, 151907 (2014).

In-plane Terahertz Response of Thin Film Sr2RuO4

Y. Takahashi, S. Chakraverty, M. Kawasaki, H. Y. Hwang, and Y. Tokura, Phys. Rev. B 89, 165116 (2014).

Photocarrier Relaxation Dynamics in LaAlO3/SrTiO3 Heterostructures

Y. Yamada, H. K. Sato, Y. Hikita, H. Y. Hwang, and Y. Kanemitsu, Proc. SPIE 8987, 898710 (2014).

Visualizing the Evolution from Interfacial Charge Compensation to Metallic Screening across the Manganite Metal-to-Insulator Transition

J. A. Mundy, Y. Hikita, T. Hidaka, T. Yajima, T. Higuchi, H. Y. Hwang, D. A. Muller, and L. F. Kourkoutis, Nat. Commun. 5, 3464 (2014).

2013

Detection of Berry's Phase in a Bulk Rashba Semiconductor

H. Murakawa, M. S. Bahramy, M. Tokunaga, Y. Kohama, C. Bell, Y. Kaneko, N. Nagaosa, H. Y. Hwang, and Y. Tokura, Science 342, 1490 (2013).

Controlled Growth of High-Quality Monolayer WS2 Layers on Sapphire and Imaging its Grain Boundary

Y. Zhang, Y. F. Zhang, Q. Q. Ji, J. Ju, H. T. Yuan, J. P. Shi, T. Gao, D. L. Ma, M. X. Liu, Y. B. Chen, X. J. Song, H. Y. Hwang, Y. Chui, and Z. F. Liu, ACS Nano 7, 8963 (2013).

Tuning the electrons at the LaAlO3/SrTiO3 interface: From growth to beyond growth

Y. Xie and H. Y. Hwang, Chin. Phys. B 22, 127301 (2013).

Multiple helimagnetic phases and topological Hall effect in epitaxial thin films of pristine and Co-doped SrFeO3

S. Chakraverty, T. Matsuda, H. Wadati, J. Okamoto, Y. Yamasaki, H. Nakao, Y. Murakami, S. Ishiwata, M. Kawasaki, Y. Taguchi, Y. Tokura, and H. Y. Hwang, Phys. Rev. B 88, 220405(R) (2013).

BaFeO3 cubic single crystalline thin film: A ferromagnetic insulator

S. Chakraverty, T. Matsuda, N. Ogawa, H. Wadati, E. Ikenaga, M. Kawasaki, Y. Tokura, and H. Y. Hwang, Appl. Phys. Lett. 103, 142416 (2013).

Tunable Coupling of Two-Dimensional Superconductors in Bilayer SrTiO3 Heterostructures

H. Inoue, M. Kim, C. Bell, Y. Hikita, S. Raghu, and H. Y. Hwang, Phys. Rev. B 88, 241104(R) (2013).

Landau Level Spectroscopy of Dirac Electrons in a Polar Semiconductor with Giant Rashba Spin Splitting

S. Bordacs, J. G. Checkelsky, H. Murakawa, H. Y. Hwang, and Y. Tokura, Phys. Rev. Lett. 111, 166403 (2013).

Locally enhanced conductivity due to the tetragonal domain structure in LaAlO3/SrTiO3 heterointerfaces

B. Kalisky, E. M. Spanton, H. Noad, J. R. Kirtley, K. C. Nowack, C. Bell, H. K. Sato, M. Hosoda, Y. Xie, Y. Hikita, C. Woltmann, G. Pfanzelt, R. Jany, C. Richter, H. Y. Hwang, J. Mannhart and K. A. Moler, Nature Mater. 12, 1091 (2013).

Transistor operation and mobility enhancement in top-gated LaAlO3/SrTiO3 heterostructures

M. Hosoda, Y. Hikita, H. Y. Hwang, and C. Bell, Appl. Phys. Lett. 103, 103507 (2013).

Measurement of the Femtosecond Optical Absorption of LaAlO3/SrTiO3 Heterostructures: Evidence for an Extremely Slow Electron Relaxation at the Interface

Y. Yamada, H. K. Sato, Y. Hikita, H. Y. Hwang, and Y. Kanemitsu, Phys. Rev. Lett. 111, 047403 (2013).

Enhancing Electron Mobility at the LaAlO3/SrTiO3 Interface by Surface Control

Y. Xie, C. Bell, Y. Hikita, S. Harashima, and H. Y. Hwang, Adv. Mater. 25, 4735 (2013).

Stoichiometry control of the electronic properties of the LaAlO3/SrTiO3 heterointerface

H. K. Sato, C. Bell, Y. Hikita, and H. Y. Hwang, Appl. Phys. Lett. 102, 251602 (2013).

Titanium dxy ferromagnetism at the LaAlO3/SrTiO3 interface

J.-S. Lee, Y. W. Xie, H. K. Sato, C. Bell, Y. Hikita, H. Y. Hwang, and C.-C. Kao, Nature Mater. 12, 703 (2013).

Spontaneous B-site order and metallic ferrimagnetism in LaSrVMoO6 grown by pulsed laser deposition

S. Chakraverty, X. Z. Yu, M. Kawasaki, Y. Tokura, and H. Y. Hwang, Appl. Phys. Lett. 102, 222406 (2013).

Strongly Spin-Orbit Coupled Two-Dimensional Electron Gas Emerging near the Surface of Polar Semiconductors

M. Sakano, M. S. Bahramy, A. Katayama, T. Shimojima, H. Murakawa, Y. Kaneko, W. Malaeb, S. Shin, K. Ono, H. Kumigashira, R. Arita, N. Nagaosa, H. Y. Hwang, Y. Tokura, and K. Ishizaka, Phys. Rev. Lett. 110, 107204 (2013).

Hot electron transport in a strongly correlated transition-metal oxide

K. G. Rana, T. Yajima, S. Parui, A. F. Kemper, T. P. Devereaux, Y. Hikita, H. Y. Hwang, and T. Banerjee, Sci. Rep. 3, 1274 (2013).

Photoconductivity and non-exponential relaxation at insulating LaAlO3/SrTiO3 interfaces

M. Kim, C. Bell, Y. Hikita, Y. Kozuka, B. G. Kim and H. Y. Hwang, Solid State Commun. (submitted).

Compositional and Gate Tuning of the Interfacial Conductivity in LaAlO3/LaTiO3/SrTiO3 Heterostructures

M. Hosoda, C. Bell, Y. Hikita and H. Y. Hwang, Appl. Phys. Lett. 102, 091601 (2013).

Coexistence of two- and three-dimensional Shubnikov-de Haas oscillations in Ar+ -irradiated KTaO3

S. Harashima, C. Bell, M. Kim, T. Yajima, Y. Hikita, and H. Y. Hwang, Phys. Rev. B 88, 085102 (2013).

2012

Effect of anisotropic strain on the charge dynamics of Nd0.5Sr0.5MnO3 thin films

P. Munkhbaatar, N. Nakagawa, H. Y. Hwang, J. S. Kim and K. Myung-Whun, Solid State Commun. 152, 1541 (2012).

Metal-to-insulator transition in anatase TiO2 thin films induced by growth rate modulation

T. Tachikawa, M. Minohara, Y. Nakanishi, Y. Hikita, M. Yoshita, H . Akiyama, C. Bell, and H. Y. Hwang, Appl. Phys. Lett. 101, 022104, (2012).

Scanning probe manipulation of nanomagnetism at the LaAlO3/SrTiO3 heterointerface

B. Kalisky, J. Bert, C. Bell, Y. Xie, H. Sato, M. Hosoda, Y. Hikita, H. Y. Hwang and K. A. Moler, Nano Letters, 12, 4055-4059 (2012).

Magnetotransport effects in polar versus non-polar SrTiO3 based heterostructures

E. Flekser, M. Ben Shalom, M. Kim, C. Bell, Y. Hikita, H. Y. Hwang, and Y. Dagan, Phys. Rev. B, 121104(R)(2012) .

Gate-tuned superfluid density at the superconducting LaAlO3/SrTiO3 interface

J. A. Bert, Katja C. Nowack, B Kalisky, H Noad, J. R. Kirtley, C. Bell, H. Sato, M. Hosoda, Y. Hikita, H. Y. Hwang and K. A. Moler, Phys. Rev. B 86, 060503(R) (2012).

Scanning SQUID susceptometry of a paramagnetic superconductor

J. R. Kirtley, B. Kalisky, J. A. Bert, C. Bell, M. Kim, Y. Hikita, H. Y. Hwang, J. H. Ngai, Y. Segal, F. J. Walker, C. H. Ahn, and K. A. Moler, Phys. Rev. B 85, 224518 (2012)

Shubnikov-de Haas Oscillations in the Bulk Rashba Semiconductor BiTeI

C. Bell, M. S. Bahramy, H. Murakawa, J. G. Checkelsky, R. Arita, Y. Kaneko, Y. Onose, M. Tokunaga, Y. Kohama, N. Nagaosa, Y. Tokura, and H. Y. Hwang, Phys. Rev. B 87, 081109(R) (2013).

Critical Thickness for Ferromagnetism in LaAlO3/SrTiO3 Heterostructures

B. Kalisky, J. A. Bert, B. B. Klopfer, C. Bell, H. K. Sato, M. Hosoda, Y. Hikita, H. Y. Hwang, and K. A. Moler, Nature. Commun. 3, 922 (2012).

Emergent Phenomena at Oxide Interfaces

H. Y. Hwang, Y. Iwasa, M. Kawasaki, B. Keimer, N. Nagaosa, and Y. Tokura, Nature Mater. 11, 103-113 (2012).

Controlling Band Alignments by Engineering Interface Dipoles at Oxide Heterointerfaces (in Japanese)

T. Yajima, Y. Hikita, M. Minohara, C. Bell, H. Kumigashira, M. Oshima, and H. Y. Hwang, Photon Factory News 29, Vol. 4, 13 (2012).

Single-Valley Quantum Hall Ferromagnet in a Dilute MgxZn1-xO/ZnO Two-Dimensional Electron System

Y. Kozuka, A. Tsukazaki, D. Maryenko, J. Falson, C. Bell, M. Kim, Y. Hikita, H. Y. Hwang, and M. Kawasaki, Phys. Rev. B 85, 075302 (2012).

Subband Structure of a Two-Dimensional Electron Gas Formed at the Polar Surface of the Strong Spin-Orbit Perovskite KTaO3.

P. D. C. King, R. H. He, T. Eknapakul, S.-K. Mo, Y. Kaneko, S. Harashima, Y. Hikita, M. S. Bahramy, C. Bell, Z. Hussain, Y. Tokura, Z.-X. Shen, H. Y. Hwang, F. Baumberger, and W. Meevasana, Phys. Rev. Lett. 108, 117602 (2012).

Intrinsic Spin-Orbit Coupling in Superconducting δ-Doped SrTiO3 Heterostructures

M. Kim, Y. Kozuka, C. Bell, Y. Hikita, and H. Y. Hwang, Phys. Rev. B 86, 085121(2012).

2011

Direct imaging of the Coexistence of Ferromagnetism and Superconductivity at the LaAlO3/SrTiO3 Interface

J. A. Bert, B. Kalisky, C. Bell, M. Kim, Y. Hikita, H. Y. Hwang, and K. A. Moler, Nature Physics 7, 767-771 (2011).

Growth Temperature Dependence of the LaAlO3/SrTiO3 Interfacial Structure

Y. Wakabayashi, Y. Yamasaki, C. Bell, Y. Hikita, H. Y. Hwang, and T. Kimura, Journal of Physics: Conf. Series 320, 012074 (2011).

Electronic Structure of the SrTiO3/LaAlO3 Interface Revealed by Resonant Soft X-Ray Scattering

H. Wadati, J. Geck, D. G. Hawthorn, T. Higuchi, M. Hosoda, C. Bell, Y. Hikita, H. Y. Hwang, C. Schussler-Langeheine, E. Schierle, E. Weschke, and G. A. Sawatzky, IOP Conference Series: Materials Science and Engineering 24, 012012 (2011).

Reentrant Insulating State in Ultrathin Manganite Films

B. Kim, D. Kwon, T. Yajima, C. Bell, Y. Hikita, H. Y. Hwang, and B. G. Kim, Appl. Phys. Lett. 99, 092513 (2011).

Common Origin of the Circular-Dichroism Pattern in Angle-Resolved Photoemission Spectroscopy of SrTiO3 and CuxBi2Se3

Y. Ishida, H. Kanto, Y. Ito, Y. Ota, K. Okazaki, W. Malaeb, M. Mulazzi, M. Okawa, S. Watanabe, C.-T. Chen, A. Kikkawa, Y. Taguchi, M. Kim, C. Bell, Y. Kozuka, H. Y. Hwang, Y. Tokura, and S. Shin, Physical Review Letters 107, 077601 (2011).

Structural Comparison of n-Type and p-Type LaAlO3/SrTiO3 Interfaces

R. Yamamoto, C. Bell, Y. Hikita, H. Y. Hwang, H. Nakamura, T. Kimura, and Y. Wakabayashi, Physical Review Letters 107, 036104 (2011).

Electronic Charges and Electric Potential at LaAlO3/SrTiO3 Interfaces Studied by Core-Level Photoemission Spectroscopy

M. Takizawa, S. Tsuda, T. Susaki, H. Y. Hwang, and A. Fujimori, Physical Review B 84, 245124 (2011).

Control of Electronic Conduction at an Oxide Heterointerface using Surface Polar Adsorbates

Y. W. Xie, Y. Hikita, C. Bell, and H. Y. Hwang, Nature Communications 2, 494 (2011).

General Considerations of the Electrostatic Boundary Conditions in Oxide Heterostructures

T. Higuchi and H. Y. Hwang, A chapter for a book Multifunctional Oxide Heterostructures, eds. E. Y. Tsymbal, E. Dagotto, C. B. Eom, and R. Ramesh, Oxford University Press (2011).

Electric Field Penetration in Au/Nb:SrTiO3 Schottky Junctions Probed by Bias-Dependent Internal Photoemission

Y. Hikita, M. Kawamura, C. Bell, and H. Y. Hwang, Appl. Phys. Lett. 98, 192103 (2011).

Fermi Surface and Superconductivity in Low-Density High-Mobility ƒÂ-Doped SrTiO3

M. Kim, C. Bell, Y. Kozuka, M. Kurita, Y. Hikita, and H. Y. Hwang, Phys. Rev. Lett., 107, 106801 (2011).

Nanometer-Scale Epitaxial Strain Release in Perovskite Heterostructures using SrAlOx Sliding Buffer Layers

H. K. Sato, J. A. Mundy, T. Higuchi, Y. Hikita, C. Bell, D. A. Muller, and H. Y. Hwang, Appl. Phys. Lett. 98, 171901 (2011).

Tuning the Electron Gas at an Oxide Heterointerface via Free Surface Charges

Y. W. Xie, C. Bell, Y. Hikita, and H. Y. Hwang, Advanced Mater. 23, 1744-1747 (2011).

LaVO4:Eu Phosphor Films with Enhanced Eu Solubility

T. Higuchi, Y. Hotta, Y. Hikita, S. Maruyama, Y. Hayamizu, H. Akiyama, H. Wadati, D. G. Hawthorn, T. Z. Regier, R. I. R. Blyth, G. A. Sawatzky, and H. Y. Hwang, Appl. Phys. Lett. 98, 071902 (2011).

Built-in and Induced Polarization across LaAlO3/SrTiO3 Heterojunctions

G. Singh-Bhalla, C. Bell, J. Ravichandran, W. Siemons, Y. Hikita, S. Salahuddin, A. F. Hebard, H. Y. Hwang, and R. Ramesh, Nature Physics 7, 80-86 (2011).

A Heteroepitaxial Perovskite Metal-Base Transistor

T. Yajima, Y. Hikita, and H. Y. Hwang, Nature Mater. 10, 198-201 (2011).

2010

Atomic-Resolution Spectroscopic Imaging of Oxide Interfaces

L. Fitting Kourkoutis, H. L. Xin, T. Higuchi, Y. Hotta, J. H. Lee, Y.Hikita, D. G. Schlom, H. Y. Hwang, and D. A. Muller, Philos. Mag. 90, 4731-4749 (2010).

Enhancing the Electron Mobility via Delta-Doping in SrTiO3

Y. Kozuka, M. Kim, H. Ohta, Y. Hikita, C. Bell, and H. Y. Hwang, Appl. Phys. Lett. 97, 222115 (2010).

Microscopic Origins for Stabilizing Room Temperature Ferromagnetism in Ultrathin Manganite Layers

L. F. Kourkoutis, J. H. Song, H. Y. Hwang, and D. A. Muller, Proceedings of the National Academy of Sciences 107, 11682-11685 (2010).

Dramatic Mobility Enhancements in Doped SrTiO3 Thin Films by Defect Management

Y. Kozuka, Y. Hikita, C. Bell, and H. Y. Hwang, Appl. Phys. Lett. 97, 012107 (2010).

Charge Writing at the LaAlO3/SrTiO3 Surface

Y. W. Xie, C. Bell, T. Yajima, Y. Hikita, and H. Y. Hwang, Nano Letters 10, 2588-2591 (2010).
ACS Articles on Request link provides for up to 50 free e-prints of this article. Details can be found at ACS Publications Home Page.

Finite Size Effect and Phase Diagram of Ultra-Thin La0.7Sr0.3MnO3

B. Kim, D. Kwon, J. H. Song, Y. Hikita, B. G. Kim, and H. Y. Hwang, Solid State Communications 105, 598-601 (2010).

An Emergent Change of Phase for Electronics

H. Takagi and H. Y. Hwang, Science 327, 1601-1602 (2010).

Two-Dimensional Confinement of 3d1 Electrons in LaTiO3/LaAlO3 Multilayers

S. S. A. Seo, M. J. Han, G. W. J. Hassink, W. S. Choi, S. J. Moon, J. S. Kim, T. Susaki, Y. S. Lee, J. Yu, C. Bernhard, H. Y. Hwang, G. Rijnders, D. H. A. Blank, B. Keimer, and T. W. Noh, Phys. Rev. Lett. 104, 036401 (2010).

Complex Oxide Schottky Junctions

Y. Hikita and H. Y. Hwang, in Thin Film Metal-Oxides: Fundamentals and Applications in Electronics and Energy, edited by S. Ramanathan, Springer (2010).

2009

Two-Dimensional Normal-State Quantum Oscillations in a Superconducting Heterostructure

Y. Kozuka, M. Kim, C. Bell, B. G. Kim, Y. Hikita, and H. Y. Hwang, Nature 462, 487-490 (2009).

Magnetodielectric Coupling in Nonmagnetic Au/GaAs:Si Schottky Barriers

S. Tongay, A. F. Hebard, Y. Hikita, and H. Y. Hwang, Phys. Rev. B 80, 205324 (2009).

Dominant Mobility Modulation by the Electric Field Effect at the LaAlO3/SrTiO3 Interface

C. Bell, S. Harashima, Y. Kozuka, M. Kim, B. G. Kim, Y. Hikita, and H. Y. Hwang, Phys. Rev. Lett. 103, 226802 (2009).

Resonant Soft X-ray Scattering Studies of Interface Reconstructions in SrTiO3/LaAlO3 Superlattices

H. Wadati, D. G. Hawthorn, J. Geck, T. Higuchi, Y. Hikita, H. Y. Hwang, L. F. Kourkoutis, D. A. Muller, S.-W. Huang, D. J. Huang, H.-J. Lin, C. Schuesler-Langeheine, H.-H. Wu, E. Schierle, E. Weschke, N. J. C. Ingle, and G. A. Sawatzky, J. Appl. Phys. 106, 083705 (2009).

Epitaxial Growth and Characterization of Eu0.5Sr0.5CoO3 Thin Films by Off-Axis Sputtering

D. Kwon, Y. Wu, B. Kim, B. G. Kim, and H. Y. Hwang, Appl. Phys. Lett. 95, 122505 (2009).

Effect of Substrate Strain on Lattice Structure, Electrical Resistivity, and Optical Conductivity of Nd0.5Sr0.5MnO3 Thin Films Grown on SrTiO3

S. Y. Jang, N. Nakagawa, S. J. Moon, T. Susaki, K. W. Kim, Y. S. Lee, H. Y. Hwang, and K. Myung-Whun, Solid State Communications 149, 1760-1764 (2009).

Enhanced Lattice Polarization in SrTiO3/LaAlO3 Superlattices Measured Using Optical Second Harmonic Generation

N. Ogawa, K. Miyano, M. Hosoda, T. Higuchi, C. Bell, Y. Hikita, and H. Y. Hwang, Phys. Rev. B (Rapid Communications) 80, 081106 (2009) Editors' Suggestion.

Multiple Conducting Carriers Generated in LaAlO3/SrTiO3 Heterostructures

S. S. A. Seo, Z. Marton, W. S. Choi, G. W. J. Hassink, D. H. A. Blank, H. Y. Hwang, T. W. Noh, T. Egami, and H. N. Lee, Appl. Phys. Lett. 95, 082107 (2009).

Mn3O4 Precipitates in Laser-Ablated Manganite Films

T. Higuchi, T. Yajima, L. Kourkoutis, Y. Hikita, N. Nakagawa, D. Muller, and H. Y. Hwang, Appl. Phys. Lett. 95, 043112 (2009).

Interface Reconstruction in V-Oxide Heterostructures Determined by X-Ray Absorption Spectroscopy

H. Wadati, D. G. Hawthorn, J. Geck, T. Z. Regier, R. I. R. Blyth, T. Higuchi, Y. Hotta, Y. Hikita, H. Y. Hwang, and G. A. Sawatzky, Appl. Phys. Lett. 95, 023115 (2009).

Thickness Dependence of the Mobility at the LaAlO3/SrTiO3 Interface

C. Bell, S. Harashima, Y. Hikita, and H. Y. Hwang, Appl. Phys. Lett. 94, 222111 (2009).

Spectroscopic Evidence for Competing Reconstructions in Polar Multilayers LaAlO3/LaVO3/LaAlO3

M. Takizawa, Y. Hotta, T. Susaki, Y. Ishida, H. Wadati, Y. Takata, K. Horiba, M. Matsunami, S. Shin, M. Yabashi, K. Tamasaku, N. Nishio, T. Ishikawa, A. Fujimori, and H. Y. Hwang, Physical Review Letters 102, 236401 (2009).

Modulation Doping of a Mott Quantum Well by a Proximate Polar Discontinuity

T. Higuchi, Y. Hotta, T. Susaki, A. Fujimori, and H. Y. Hwang, Physical Review B 79, 075415 (2009), Editors' Suggestion.

Termination Control of the Interface Dipole in La0.7Sr0.3MnO3/Nb:SrTiO3 (001) Schottky Junctions

Y. Hikita, M. Nishikawa, T. Yajima, and H. Y. Hwang, Physical Review B 79, 073101 (2009).

2008

Two Dimensional Electron Gases at Oxide Interfaces

J. Mannhart, D. H. A. Blank, H. Y. Hwang, A. J. Millis, and J. M. Triscone, MRS Bulletin 33, 1027-1034 (2008).

Complex Oxides on Fire

Y. Tokura and H. Y. Hwang, Nature Materials 7, 694-695 (2008).

Carrier doping in anatase TiO2 film by perovskite overlayer deposition

K. S. Takahashi and H. Y. Hwang, Appl. Phys. Lett. 93, 082112 (2008).

Enhanced Thermodynamic Stability of Epitaxial Oxide Thin Films

J. H. Song, T. Susaki, and H. Y. Hwang, Advanced Materials 20, 2528-2532 (2008).

Vanishing Hall Coefficient in the Extreme Quantum Limit in Photocarrier-Doped SrTiO3

Y. Kozuka, T. Susaki, and H. Y. Hwang, Physical Review Letters 101, 096601 (2008)

Negative Differential Resistance Induced by Mn Substitution at SrRuO3/Nb:SrTiO3 Schottky Interfaces

Y. Hikita, L. F. Kourkoutis, T. Susaki, D. A. Muller, H. Takagi, and H. Y. Hwang, Physical Review B 77, 205330 (2008).

Atomic-Scale Chemical Imaging of Composition and Bonding by Aberration-Corrected Microscopy

D. A. Muller, L. F. Kourkoutis, M. Murfitt, J. H. Song, H. Y. Hwang, J. Silcox, N. Dellby, and O. L. Krivanek, Science 319, 1073-1076 (2008).

Hard X-Ray Photoemission Study of LaAlO3/LaVO3 Multilayers

H. Wadati, Y. Hotta, A. Fujimori, T. Susaki, H. Y. Hwang, Y. Takata, K. Horiba, M. Matsunami, S. Shin, M. Yabashi, K. Tamasaku, Y. Nishino, and T. Ishikawa, Physical Review B 77, 045122 (2008).

New Physical Properties at Oxide Interfaces

Y. Hotta and H. Y. Hwang, Parity (Japanese) 23, 30 (2008).

2007

Polar Discontinuity Doping of the LaVO3/SrTiO3 Interface

Y. Hotta, T. Susaki, and H. Y. Hwang, Physical Review Letters 99, 236805 (2007).

Growth Mode Control of the Free Carrier Density in SrTiO3 Homoepitaxial Films

A. Ohtomo and H. Y. Hwang, J. Appl. Phys. 102, 083704 (2007).

Temperature-Dependent Polarity Reversal in Au/Nb:SrTiO3 Schottky Junctions

T. Susaki, Y. Kozuka, Y. Tateyama, and H. Y. Hwang, Phys. Rev. B 76, 155110 (2007).

Characterization of LaVOx Thin Films by Photoemission Spectroscopy

H. Wadati, Y. Hotta, M. Takizawa, A. Fujimori, T. Susaki, and H. Y. Hwang, J. Appl. Phys. 102, 053707 (2007).

Asymmetric Interface Profiles in LaVO3/SrTiO3 Heterostructures Grown by Pulsed Laser Deposition

L. F. Kourkoutis, D. A. Muller, Y. Hotta, and H. Y. Hwang, Appl. Phys. Lett. 91, 163101 (2007).

Optically Tuned Dimensionality Crossover in Photocarrier-Doped SrTiO3: Onset of Weak Localization

Y. Kozuka, Y. Hikita, T. Susaki, and H. Y. Hwang, Physical Review B 76, 085129 (2007).

Characterization of the Schottky barrier in SrRuO3/Nb:SrTiO3 junctions

Y. Hikita, Y. Kozuka, T. Susaki, H. Takagi, and H. Y. Hwang, Appl. Phys. Lett. 90, 143507 (2007).

Transport Mechanisms in Manganite-Titanate Heterojunctions

T. Susaki, N. Nakagawa, and H. Y. Hwang, Phys. Rev. B 75, 104409 (2007).

2006

Electronic Structure of the Mott Insulator LaVO3 in a Quantum-Well Geometry

Y. Hotta, H. Wadati, A. Fujimori, T. Susaki, and H. Y. Hwang, Appl. Phys. Lett. 89, 251916 (2006).

Nanometer Scale Electronic Reconstruction at the Interface between LaVO3 and LaVO4

L. F. Kourkoutis, Y. Hotta, T. Susaki, H. Y. Hwang, and D. A. Muller, Physics Review Letters 97, 256803 (2006).

Tuning Interface States

H. Y. Hwang, Science 313, 1895-1896 (2006).

Growth and Electronic Structure of LaVOx Films

Y. Hotta, Y. Mukunoki, T. Susaki, H. Y. Hwang, L. Fitting, and D. A. Muller, Appl. Phys. Lett. 89, 031918 (2006).

Lattice-Polarization Effects on Electron-Gas Charge Densities in Ionic Superlattices

D. R. Hamann, D. A. Muller, and H. Y. Hwang, Phys. Rev. B 73, 195403 (2006).

Rectifying NdNiO3/Nb:SrTiO3 junctions as a probe of the surface electronic structure of NdNiO3

Y. Kozuka, T. Susaki, and H. Y. Hwang, Appl. Phys. Lett. 88, 142111 (2006).

Why Some Interfaces Cannot be Sharp

N. Nakagawa, H. Y. Hwang, and D. A. Muller, Nature Mater. 5, 204-209 (2006).

Atomic Control of the Electronic Structure at Complex Oxide Heterointerfaces

H. Y. Hwang, MRS Bulletin 31, 28-35 (2006).

2005

Oxygen Vacancies Shine Blue

H. Y. Hwang, Nature Mater. 4, 803-804 (2005).

Atomically Flat (110) SrTiO3 and Heteroepitaxy

Y. Mukunoki, N. Nakagawa, T. Susaki, and H. Y. Hwang, Appl. Phys. Lett. 86, 171908 (2005).

Magnetocapacitance and Exponential Magnetoresistance in Manganite-Titanate Heterojunctions

N. Nakagawa, M. Asai, Y. Mukunoki, T. Susaki, and H. Y. Hwang, Appl. Phys. Lett. 86, 082504 (2005).

2004

High-Mobility Electron Transport in SrTiO3 Heterostructures

A. Ohtomo and H. Y. Hwang, Oyo Buturi (Japanese) 73, 605 (2004).

Active Mode Locking of Broadband Quantum Cascade Lasers

A. Soibel, F. Capasso, C. Gmachl, M. L. Peabody, A. M. Seargent, R. Paiella, H. Y. Hwang, D. L. Sivco, A. Y. Cho, H. C. Liu, C. Jirauschek, and F. X. Kaertner, IEEE Journal of Quantum Electronics 40, 844-851 (2004).

Atomic-Scale Imaging of Nanoengineered Oxygen Vacancy Profiles in SrTiO3

D.A. Muller, N. Nakagawa, A. Ohtomo, J.L. Grazul, and H.Y. Hwang, Nature 430, 657-661 (2004).

Surface Depletion in Doped SrTiO3 Thin Films

A. Ohtomo and H.Y. Hwang, Appl. Phys. Lett. 84, 1716 (2004).

A High-Mobility Electron Gas at the LaAlO3/SrTiO3 Heterointerface

A. Ohtomo and H. Y. Hwang, Nature 427, 423-426 (2004).

New Physics Arising from Single Unit Cell Growth Control

A. Ohtomo and H.Y. Hwang, Parity (Japanese) 19, 22 (2004).

High Mobility Electrons in SrTiO3 Heterostructures

H.Y. Hwang, A. Ohtomo, N. Nakagawa, D.A. Muller, and J.L. Grazul, Physica E 22, 712-716 (2004).

2003 and Earlier

Quantitative Atomic-Scale Profiles of Oxygen Vacancies in SrTiO3

D.A. Muller, A. Ohtomo, J.L. Grazul, and H.Y. Hwang, Microscopy and Microanalysis 9 (suppl. 2), 110-111 (2003).

Artificial Charge-Modulation in Atomic-Scale Perovskite Titanate Superlattices

A. Ohtomo, D.A. Muller, J.L. Grazul, and H.Y. Hwang, Nature 419, 378-380 (2002).

Artificial Charge Modulations in La-Doped SrTiO3 Superlattices

D.A. Muller, A. Ohtomo, J. Grazul, and H.Y. Hwang, Microscopy and Microanalysis 8(suppl. 2), 576-577 (2002).

Quantum Cascade Lasers: Ultrahigh-Speed Operation, Optical Wireless Communication, Narrow Linewidth, and Far-Infrared Emission

F. Capasso, R. Paiella, R. Martini, R. Colombelli, C. Gmachl, T. L. Myers, M. S. Taubman, R. M. Williams, C. G. Bethea, K. Unterrainer, H. Y. Hwang, D. L. Sivco, A. Y. Cho, A. M. Sergent, H. C. Liu, and E. A. Whittaker, IEEE Journal of Quantum Electronics 38, 511-532 (2002).

Quantum Cascade Lasers with Double Metal-Semiconductor Waveguide Resonators

K. Unterrainer, R. Colombelli, C. Gmachl, F. Capasso, H. Y. Hwang, A. M. Sergent, D. L. Sivco, and A. Y. Cho, Appl. Phys. Lett. 80, 3060 (2002).

Free-Space Optical Transmission of Multimedia Satellite Data Streams Using Mid-Infrared Quantum Cascade Lasers

R. Martini, C. G. Bethea, F. Capasso, C. Gmachl, R. Paiella, E. A. Whittaker, H. Y. Hwang, D. L. Sivco, J. N. Baillargeon, and A. Y. Cho, Electronics Letters 38, 181-183 (2002).

Recent Results in Quantum Cascade Lasers and Intersubband Transitions in GaN/AlGaN Multiple Quantum Wells

C. Gmachl, H. M. Ng, R. Paiella, R. Martini, H. Y. Hwang, D. L. Sivco, F. Capasso, A. Y. Cho, S. V. Frolov, S. N. G. Chu, and H. C. Liu, Physica E 13, 823-828 (2002).

Epitaxial Growth and Electronic Structure of LaTiOx Films

A. Ohtomo, D.A. Muller, J.L. Grazul, and H.Y. Hwang, Appl. Phys. Lett. 80, 3922 (2002).

Strong self-phase modulation in planar chalcogenide glass waveguides

S. Spaelter, H. Y. Hwang, J. Zimmermann, G. Lenz, T. Katsufuji, S-W. Cheong, and R. E. Slusher, Optics Letters 27, 363-365 (2002).

High-Speed Digital Data Transmission Using Mid-Infrared Quantum Cascade Lasers

R. Martini, R. Paiella, C. Gmachl, F. Capasso, E. A. Whittaker, H. C. Liu, H. Y. Hwang, D. L. Sivco, J. N. Baillargeon, and A. Y. Cho, Electronics Letters 37, 1290-1292 (2001).

High-Frequency Modulation without the Relaxation Oscillation Resonance in Quantum Cascade Lasers

R. Paiella, R. Martini, F. Capasso, C. Gmachl, H. Y. Hwang, D. L. Sivco, J. N. Baillargeon, A. Y. Cho, E. A. Whittaker, and H. C. Liu, Appl. Phys. Lett. 79, 2526 (2001).

Absence of Relaxation Oxcillation in Quantum Cascade Lasers Verified by High-Frequency Modulation

R. Martini, R. Paiella, F. Capasso, C. Gmachl, H. Y. Hwang, D. L. Sivco, A. Y. Cho, E. A. Whittaker, and H. C. Liu, CLEO (2001).

Quantum Cascade Lasers with Low-Loss Chalcogenide Lateral Waveguides

C. Gmachl, H. Y. Hwang, R. Paiella, D. L. Sivco, J. N. Baillargeon, F. Capasso, and A. Y. Cho, IEEE Photonics Technology Letters 13, 182-184 (2001).

Gain-Switching and Active Mode-Locking of Mid-Infrared Quantum Cascade Lasers

R. Paiella, F. Capasso, C. Gmachl, C. G. Bethea, H. Y. Hwang, D. L. Sivco, J. N. Baillargeon, A. Y. Cho, and H. C. Liu, Optics and Photonics News, p. 22-23 December 2000.

Gain-Switching and Mode-Locking of Quantum Cascade Lasers

R. Paiella, F. Capasso, C. Gmachl, C. G. Bethea, H. Y. Hwang, D. L .Sivco, J. N. Baillargeon, A. L. Hutchinson, A. Y. Cho, and H. C. Liu, LEOS 2000 Invited.

Monolithic Active Mode Locking of Quantum Cascade Lasers

R. Paiella, F. Capasso, C. Gmachl, H. Y. Hwang, D. L. Sivco, A. L. Hutchinson, A. Y. Cho, and H. C. Liu, Appl. Phys. Lett. 77, 169 (2000).

Highly Nonlinear Chalcogenide Glasses for Ultrafast All Optical Switching in Optical TDM Communication Systems

S. Spaelter, G. Lenz, R. E. Slusher, H. Y. Hwang, J. Zimmermann, T. Katsufuji, S-W. Cheong, and M. E. Lines, OFCf00, Baltimore, MD, 3/5-10/00, paper ThI4.

Strong Bragg Gratings in Chalcogenide Glass Waveguides

S. Spaelter, H. Y. Hwang, J. Rogers, T. Katsufuji, G. Lenz, S-W. Cheong, R. E. Slusher, A. Kelsey, and B. MacLeod, CLEO/QELS 2000, San Francisco, CA, 5/7-12/00, paper CtuH2.

Large Kerr Effect in Bulk Se-based Chalcogenide Glasses

G. Lenz, J. Zimmermann, T. Katsufuji, M. E. Lines, H. Y. Hwang, S. Spaelter, R. E. Slusher, S-W. Cheong, J. S. Sanghera, and I. D. Aggarwal, Optics Letters 25, 254-256 (2000).

Anomalous Magneto-Transport Properties of R2Mo2O7 Near the Magnetic Phase Boundary

T. Katsufuji, H. Y. Hwang, and S-W. Cheong, Physical Review Letters 84, 1998 (2000).

Magnon Damping by Magnon-Phonon Coupling in Manganese Perovskites

P. Dai, H. Y. Hwang, J. Zhang, J. A. Fernandez-Baca, S-W. Cheong, C. Kloc, Y. Tomioka, and Y. Tokura, Phys. Rev. B 61, 9553 (2000).

Ferromagnetism versus Charge/Orbital Ordering in Mixed-Valent Manganites

S-W. Cheong and H. Y. Hwang, in Colossal Magnetoresistive Oxides, edited by Y. Tokura, p. 237 Gordon and Breach Science Publishers, Advances in Condensed Matter Science (2000).

Spin-Polarized Tunneling Magnetoresistance in Half-Metallic Oxides

H. Y. Hwang and S-W. Cheong, in Colossal Magnetoresistive Oxides, edited by Y. Tokura, p. 307 Gordon and Breach Science Publishers, Advances in Condensed Matter Science (2000).

Nonlinear Optics in Chalcogenide Waveguides

S. Spaelter G. Lenz, H. Y. Hwang, J. Zimmermann, S-W. Cheong, T. Katsufuji, and R. E. Slusher, OSA Annual Meeting 1999, Santa Clara, CA, paper WLL111.

Optimizing Chalcogenide Glass Nonlinearities at 1.55 mm

G. Lenz, M. E. Lines, J. Zimmermann, T. Katsufuji, H. Y. Hwang, S. Spaelter, S-W. Cheong, R. E. Slusher, A. J. Bruce, and J. B. MacChesney, OSA Annual Meeting 1999, Santa Clara, CA, paper WLL112.

Large Kerr Effect Chalcogenide Glasses for Ultrafast All-Optical Processing; Theory and Experiment

G. Lenz, M. E. Lines, R. E. Slusher, J. Zimmermann, T. Katsufuji, H. Y. Hwang, S. Spaelter, and S-W. Cheong, to be submitted to Journal of the Optical Society of America B.

Nonlinear Pulse Dynamics in Planar Chalcogenide Glass Waveguides

S. Spaelter, G. Lenz, H. Y. Hwang, J. Zimmermann, S-W. Cheong, T. Katsufuji, and R. E. Slusher, in Proceedings of Nonlinear Guided Waves and Their Applications OSA Topical Meeting, Dijon, FR 9/1-3/99, postdeadline paper PD6.

Chalcogenide Glass Films for Nonlinear Optics

S. Spaelter, G. Lenz, H. Y. Hwang, J. Zimmermann, S-W. Cheong, T. Katsufuji, M. E. Lines, and R. E. Slushe, in Proceedings of Nonlinear Guided Waves and Their Applications OSA Topical Meeting, Dijon, FR 9/1-3/99, paper ThD38.

Intergrain Magnetoresistance via Second-Order Tunneling in Perovskite Manganites

S. C. Lee, H. Y. Hwang, B. I. Shraiman, and S-W. Cheong, Physical Review Letters 82, 4508 (1999).

Anisotropy of Magnetoresistance in (110) La0.7Sr0.3MnO3 Thin Films

Y. Suzuki and H. Y. Hwang, J. Appl. Phys. 85, 4797-4799 (1999).

Magnetoresistance in a Ferromagnet with Few Electrons: (Eu,Tm)Se

B. Batlogg, F. Jacob, H. Y. Hwang, E. Bucher, G. S. Boebinger, and F. Balakirev, in Proceedings of the Conference On Physical Phenomenon at High Magnetic Fields - III, National High Magnetic Field Lab, Tallahassee, Fl, 10/26-27/98.

Magnetic Anisotropy and Lattice Distortions in the Doped Perovskite Manganites

Y. Suzuki, H. Y. Hwang, S-W. Cheong, R. B. van Dover, A. Asamitsu, and Y. Tokura, Materials Research Society Symposium Proceedings 494, 41-54 (1998).

Magnetic Anisotropy of Doped Manganite Thin Films and Crystals

Y. Suzuki, H. Y. Hwang, S-W. Cheong, T. Siegrist, R. B. van Dover, A. Asamitsu, and Y. Tokura, J. Appl. Phys. 83, 7064-7066 (1998).

Evolution of the Low-Frequency Spin Dynamics in Ferromagnetic Manganites

J. A. Fernandez-Baca, P. Dai, H. Y. Hwang, C. Kloc, and S-W. Cheong, Phys. Rev. Lett. 80, 4012 (1998).

Softening and Broadening of the Zone Boundary Magnons in Pr0.63Sr0.37MnO3

H. Y. Hwang, P. Dai, S-W. Cheong, G. Aeppli, D. A. Tennant, and H. A. Mook, Phys. Rev. Lett. 80, 1316 (1998).

Competition Between Charge Ordering and Ferromagnetism in Manganese Perovskites

P. G. Radaelli, G. Iannone, D. E. Cox, M. Marezio, H. Y. Hwang, and S-W. Cheong, Physica B 241-243, 295 (1998).

Enhanced Intergrain Tunneling Magnetoresistance in Half-Metallic CrO2 Films

H. Y. Hwang and S-W. Cheong, Science 278, 1607-1609 (1997).

Structural Effects on the Magnetic and Transport Properties of Perovskite A1-xA'xMnO3 (x = 0.25, 0.30)

P. G. Radaelli, G. Iannone, M. Marezio, H. Y. Hwang, S-W. Cheong, J. D. Jorgensen, and D. N. Argyriou, Phys. Rev. B 56, 8265 (1997).

The Effects of Strain on the Magnetic Anisotropy of Doped Manganite Thin Films

Y. Suzuki, C. Tsai, H. Y. Hwang, S-W. Cheong, and R. B. van Dover, Materials Research Society Symposium Proceedings, 474, 205-210 (1997).

Low-Field Magnetoresistance in the Pyrochlore Tl2Mn2O7

H. Y. Hwang and S-W. Cheong, Nature 389, 942-944 (1997).

The Role of Strain in Magnetic Anisotropy of Manganite Thin Films

Y. Suzuki, H. Y. Hwang, S-W. Cheong, and R. B. van Dover, Appl. Phys. Lett. 71, 140 (1997).

Charge-Ordered Stripes in La1-xCaxMnO3 with x > 0.5

C. H. Chen, S-W. Cheong, and H. Y. Hwang, J. Appl. Phys. 81, 4326-4330 (1997).

Charge Localization by Static and Dynamic Distortions of the MnO6 Octahedra in Perovskite Manganites

P. G. Radaelli, M. Marezio, H. Y. Hwang, S-W. Cheong, and B. Batlogg, Phys. Rev. B 54, 8992 (1996).

Ln3Cu4P4O2: A New Lanthanide Transition Metal Pnictide Oxide Structure Type

R. J. Cava, H. W. Zandbergen, J. J. Krajewski, T. Siegrist, H. Y. Hwang, and B. Batlogg, Journal of Solid State Chemistry 129, 250-256 (1996).

Spin-Polarized Intergrain Tunneling in La2/3Sr1/3MnO3

H. Y. Hwang, S-W. Cheong, N. P. Ong, and B. Batlogg, Phys. Rev. Lett. 77, 2041 (1996).

Enhancing the Low Field Magnetoresistive Response in Perovskite Manganites

H. Y. Hwang, S-W. Cheong, and B. Batlogg, Appl. Phys. Lett. 68, 3494 (1996).

Structural Phase Diagram of Perovskite A0.7A'0.3MnO3 (A = La, Pr; A' = Ca, Sr, Ba): A New Imma Allotype

P. G. Radaelli, M. Marezio, H. Y. Hwang, and S-W. Cheong, Journal of Solid State Chemistry 122, 444-447 (1996).

Giant Magnetoresistance in Pyrochlore Tl2InxMn2O7

S-W. Cheong, H. Y. Hwang, B. Batlogg, and L. W. Rupp, Jr., Solid State Communications 98, 163-166 (1996).

Origin and Control of the gColossalh Magnetoresistance in Doped LaMnO3

S-W. Cheong, H. Y. Hwang, P. G. Radaelli, D. E. Cox, M. Marezio, B. Batlogg, P. Schiffer, and A. P. Ramirez Proceedings of Physical Phenomena at High Magnetic Fields - II, edited by Z. Fisk et al. (World Scientific, Singapore, 1996), p. 702.

Pressure Effects on the Magnetoresistance in Doped Manganese Perovskites

H. Y. Hwang, T. T. M. Palstra, S-W. Cheong, and B. Batlogg, Phys. Rev. B 52, 15046 (1995).

Lattice Effects on the Magnetoresistance in Doped LaMnO3

H. Y. Hwang, S-W. Cheong, P. G. Radaelli, M. Marezio, and B. Batlogg, Phys. Rev. Lett. 75, 914 (1995).

Charge Dynamics in (La,Sr)2CuO4: from Underdoping to Overdoping

B. Batlogg, H. Y. Hwang, H. Takagi, H. L. Kao, J. Kwo, and R. J. Cava, J. Low Temp. Phys. 95, 23-31 (1994).

Ordering of Charge Carriers in (La,Sr)2NiO4

S-W. Cheong, C. H. Chen, H. Y. Hwang, B. Batlogg, L. W. Rupp, Jr., and A. S. Cooper, Physica B 199-200, 659 (1994).

Normal State Phase Diagram of (La,Sr)2CuO4 from Charge and Spin Dynamics

B. Batlogg, H. Y. Hwang, H. Takagi, R. J. Cava, H. L. Kao, and J. Kwo, Physica C 235-240, 130 (1994).

Scaling of the Temperature Dependent Hall Effect in La2-xSrxCuO4

H. Y. Hwang, B. Batlogg, H. Takagi, H. L. Kao, J. Kwo, R. J. Cava, J. J. Krajewski, and W. F. Peck, Jr., Phys. Rev. Lett. 72, 2636 (1994).

Charge-Ordered States in (La,Sr)2NiO4 for Hole Concentrations nh = 1/3 and 1/2

S-W. Cheong, H. Y. Hwang, C. H. Chen, B. Batlogg, L. W. Rupp, Jr., and S. A. Carter, Phys. Rev. B 49, 7088 (1994).

Electron-Hole Doping of the Metal-Insulator Transition Compound RENiO3

S-W. Cheong, H. Y. Hwang, B. Batlogg, A. S. Cooper, and P. C. Canfield, Physica B 194, 1087-1088 (1994).

Electrochemical and High Pressure Superoxygenation of YCuO2+x and LaCuO2+x Delafossites

R. J. Cava, W. F. Peck, Jr., J. J. Krajewski, S-W. Cheong, and H. Y. Hwang, Journal of Materials Research 9, 314-317 (1994).

Oxygen-Deficient Barium Lead Oxide Perovskites

R. J. Cava, H. Takagi, J. J. Krajewski, W. F. Peck, Jr., and H. Y. Hwang, Phys. Rev. B 47, 11525 (1993).

Crystallographic Evolution, T' ¨ T* ¨ T, in Pr2-xSrxCuO4-ƒÂ

H. Y. Hwang, S-W. Cheong, A. S. Cooper, L. W. Rupp, Jr., and B. Batlogg, Physica C 192, 362-371 (1992).

Cation Ordering and Oxygen Stoichiometry in LaRSrCu2O6+ƒÂ (R = La, Pr, Nd, Sm, and Gd)

Z. Q. Tan, S. M. Heald, S-W. Cheong, H. Y. Hwang, A. S. Cooper, and J. I. Budnick, Physica C 184, 229-234 (1991).

Peroxisomes Induced in Candida Boidinii by Methanol, Oleic Acid, and D-alanine Vary in Metabolic Function but Share Common Integral Membrane Proteins

J. M. Goodman, S. B. Trapp, H. Y. Hwang, and M. Veenhuis, Journal of Cell Science 97, 193-204 (1990).