Publications

CHARM Laboratory : Complex Heterostructures & Advanced Researches on Multiferroics

Publications

2025

  1. Han-Byul Jang, Jaehyun Lee, Younjung Jo, and Chan-Ho Yang, Magnetic-field-tuned superconductor-to-insulator transition via mosaic phase in cuprate thin films, Current Applied Physics 71, 120 (2025, Jan.)

    2. 2024

    1. Heung-Sik Park, Jinhyuk Jang, Ji Soo Lim, Jeonghun Suh, Si-Young Choi, and Chan-Ho Yang, Oxygen vacancy order–disorder transition process during topotactic filament formation in a perovskite oxide tracked by Raman microscopy and transmission electron microscopy, Applied Physics Reviews 22, 041406 (2024, Oct.)

    2. Young Jin Jeong, Do Gyeom Jeong, Hwiin Ju, In Hyeok Choi, Chang Jae Roh, Jin Hong Lee, Chan-Ho Yang, and Jong Seok Lee, Individual domain characteristics determined by second-harmonic generation diffractometer for multi-domain multiferroics, Scientific Reports 14, 24309 (2024, Oct.)

    3. Minho Kang, Jeongdae Seo, Jaehyun Lee, Duc Duy Le, and Chan-Ho Yang, Weak localization and magnetoresistance phenomena of hydrogen-annealed WO3 films, Applied Physics Letters 125, 061902 (2024, Aug.)

    4. Youngki Yeo, Jihun Kim, Jeonghun Suh, Jinhyuk Jang, Kyungrok Kang, Peggy Schoenherr, Kwang-Tak Kim, Yong-Jin Kim, Kee Hoon Kim, Clemens Ulrich, Jan Seidel, Si-Young Choi, and Chan-Ho Yang, Exploring the Possibility of Thermally Assisted Creation and Annihilation of Anti-Frenkel Defects in a Multiferroic Oxide for Tuning Interfacial Ferroelectricity, Advanced Materials Interfaces, 2400027 (2024, Jul.)

    5. Heonsu Ahn, Gunho Moon, Hang-gyo Jung, Bingchen Deng, Dong-Hwan Yang, Sera Yang, Cheolhee Han, Hyunje Cho, Youngki Yeo, Cheol-Joo Kim, Chan-Ho Yang, Jonghwan Kim, Si-Young Choi, Hongkun Park, Jongwook Jeon, Jin-Hong Park, Moon-Ho Jo, Integrated 1D epitaxial mirror twin boundaries for ultrascaled 2D MoS2 field-effect transistors, Nature Nanotechnology 19, 955 (2024, Jul.)

    6. Yong-Jun Kwon, and Chan-Ho Yang, Thickness-dependent topological domain textures of layered ferroelectric Bi2WO6 thin films, Applied Physics Letters 124, 212902 (2024, May)

    7. Heung-Sik Park, Jeonghun Suh, and Chan-Ho Yang, Visualization and quantification of ionic defect flow by electrocoloration, Current Applied Physics 61, 107 (2024, May)

    8. Seong Min Park, Jaegyu Kim, Gopinathan Anoop, WooJun Seol, Su Yong Lee, Hyunjin Joh, Tae Yeon Kim, Je Oh Choi, Seungbum Hong, and Chan-Ho Yang, Hyeon Jun Lee, and Ji Young Jo, Ferroelectric SrMnO3 thin film grown on (110)-oriented PMN-PT substrate, physica status solidi (RRL)-Rapid Research Letters 2400025 (2024, Apr.)

    9. Harisankar Sasindrababu, Venkata Raveendra Nallagatla, Duc Duy Le, Bingqian Song, Heung-Sik Park, Jung Woo Cho, Seung Chul Chae, Eunsu Lee, Chan-Ho Yang, and Chang Uk Jung, Electronic Transport and Resistive Switching Properties in Topotactic SrFe1-xCoxO2.5 Devices, ACS Applied Electronic Materials 6, 3264 (2024, Apr.)

    10. Boram Kim, Jinshu Li, Jeehoon Park, Hongsik Lim, Gyuho Myeong, Wongil Shin, Seungho Kim, Taehyeok Jin, Qi Zhang, Kyunghwan Sung, Duc Duy Le, Kenji Watanabe, Takashi Taniguchi, Chan-Ho Yang, Euyheon Hwang, and Sungjae Cho, Effect of charge density wave on the electronic transport in graphene, ACS Applied Electronic Materials 6, 1174 (2024, Feb.)

    11. Bingqian Song, Heung-Sik Park, Jeonghun Suh, Jeongdae Seo, Jihun Kim, and Chan-Ho Yang, Three-Dimensional Visualization of Oxygen-Vacancy Migration and Redistribution in Ca-Substituted BiFeO3, ACS Nano 18, 1948 (2024, Jan.)

    2023

    1. Heung-Sik Park, Ji Soo Lim, Jeonghun Suh, and Chan-Ho Yang, Morphological instability and mobility of the color front during the electrocoloration of perovskite oxide thin films, Physical Review Materials 7, 123401 (2023, Dec.)

    2. Yeojin Ahn, Gyubin Lee, Namgyu Noh, Chulwan Lee, Duc Duy Le, Sunghun Kim, Yeonghoon Lee, Jounghoon Hyun, Chan-young Lim, Jaehun Cha, Mingi Jho, Seonggeon Gim, Jonathan D. Denlinger, Chan-Ho Yang, Jong Min Yuk, Myung Joon Han, and Yeongkwan Kim, Converting the Bulk Transition Metal Dichalcogenides Crystal into Stacked Monolayers via Ethylenediamine Intercalation, Nano Letters 23, 9733 (2023, Oct.)

    3. Jaeun Eom, In Hak Lee, Jung Yun Kee, Minhyun Cho, Jeongdae Seo, Hoyoung Suh, Hyung-Jin Choi, Yumin Sim, Shuzhang Chen, Hye Jung Chang, Seung-Hyub Baek, Cedomir Petrovic, Hyejin Ryu, Chaun Jang, Young Duck Kim, Chan-Ho Yang, Maeng-Je Seong, Jin Hong Lee, Se Young Park, and Jun Woo Choi, Voltage control of magnetism in Fe3-xGeTe2/In2Se3 van der Waals ferromagnetic/ferroelectric heterostructures, Nature Communications 14, 5605 (2023, Sep.)

    4. Jeongdae Seo, Ho-Hyun Nahm, Heung-Sik Park, Shinhee Yun, Jin Hong Lee, Yong-Jin Kim, Yong-Hyun Kim, and Chan-Ho Yang, Detection of the prototype symmetry of ferroelastic WO3 domain walls by angle-resolved polarized Raman spectroscopy, Physical Review B 108, 014103 (2023, July)

    5. Yong-Jun Kwon, Youngki Yeo, Min-Su Kim, Yong-Jin Kim, Heung-Sik Park, Jaegyu Kim, Si-Young Choi, and Chan-Ho Yang, Observation of Hidden Polar Phases and Flux Closure Domain Topology in Bi2WO6 Thin Films, Nano Letters 23, 4557 (2023, May)

    6. Youngki Yeo, Soo-Yoon Hwang, Jinwook Yeo, Jihun Kim, Jinhyuk Jang, Heung-Sik Park, Yong-Jin Kim, Duc Duy Le, Kyung Song, Moonhong Kim, Seunghwa Ryu, Si-Young Choi, and Chan-Ho Yang, Configurable Crack Wall Conduction in a Complex Oxide, Nano Letters 23, 398 (2023, Jan.)

    2022

    1. Giovanni Annur Safarina, Yong-Jin Kim, and Chan-Ho Yang, Possible absence of a Jahn-Teller distortion critical thickness in geometrically designed LaMnO3 films, Physical Review B 106, 134310 (2022, Oct.)

    2. Jun Han Lee, Nguyen Xuan Duong, Min-Hyoung Jung, Hyun-Jae Lee, Ahyoung Kim, Youngki Yeo, Junhyung Kim, Gye-Hyeon Kim, Byeong-Gwan Cho, Jaegyu Kim, Furqan Ul Hassan Naqvi, Jong-Seong Bae, Jeehoon Kim, Chang Won Ahn, Young-Min Kim, Tae Kwon Song, Jae-Hyeon Ko, Tae-Yeong Koo, Changhee Sohn, Kibog Park, Chan-Ho Yang, Sang Mo Yang, Jun Hee Lee, Hu Young Jeong, Tae Heon Kim, and Yoon Seok Oh, Reversibly Controlled Ternary Polar States and Ferroelectric Bias Promoted by Boosting Square-Tensile-Strain, Advanced Materials 34, 2205825 (2022, Sep.)

    3. Ji Soo Lim, Ho-Hyun Nahm, Marco Campanini, Jounghee Lee, Young-Jin Kim, Heung-Sik Park, Jeonghun Suh, Jun Jung, Yongsoo Yang, Tae Yeong Koo, Marta D. Rossell, Yong-Hyun Kim, and Chan-Ho Yang, Critical ionic transport across an oxygen-vacancy ordering transition, Nature Communications 13, 5130 (2022, Sep.)

    4. Hye-Won Seo, Jae-Ung Lee, Chan-Ho Yang, and Kanghyun Chu, Nano-characterizations of low-dimensional nanostructural materials, Journal of the Korean Physical Society 80, 1035 (2022, Apr.)

    5. Heung-Sik Park, Ji Soo Lim, Jeonghun Suh, and Chan-Ho Yang, Electric-field-induced epitaxial breakdown and emergent magnetoresistance due to strong oxygen reduction in Ca-doped BiFeO3, Physical Review Materials 6, 024404 (2022, Feb.)

    6. Yong-Jin Kim, Changhoon Lee, Heung-Sik Park, Youngki Yeo, Giovanni Annur Safarina, Duc Duy Le, Jeong-Gyu Kim, Daehyeon Bang, Byeong-Gwan Cho, Jae-Hoon Park, Kyung-Tae Ko, Tae Yeong Koo, Ji Hoon Shim, and Chan-Ho Yang, Orbital Order Melting at Reduced Dimensions, Nano Letters 22, 1059 (2022, Jan.)

    7. Giovanni Annur Safarina, Yong-Jin Kim, Heung-Sik Park, and Chan-Ho Yang, Raman spectroscopy of the Jahn–Teller phonons in a magnetic LaMnO3 thin film grown on KTaO3, Journal of Applied Physics 131, 025302 (2022, Jan.)

    2021

    1. Chan-Ho Yang, New Horizons for ferroelectrics, Physics and High Technology (2021) (invited perspective)

    2. Jeonghun Suh, Ji Soo Lim, Heung-Sik Park, and Chan-Ho Yang, Complementary study of anisotropic ion conduction in (110)-oriented Ca-doped BiFeO3 films using electrochromism and impedance spectroscopy, Applied Physics Letters 119, 022902 (2021, Jul.)

    3. Yong-Jin Kim, Heung-Sik Park, and Chan-Ho Yang, Raman imaging of ferroelastically configurable Jahn–Teller domains in LaMnO3, npj Quantum Materials 6, 62 (2021, Jun.)

    4. Jun Young Lee, Gopinathan Anoop, Sanjith Unithrattil, WooJun Seol, Youngki Yeo, Chan-Ho Yang, Su Yong Lee, and Ji Young Jo, The role of intermediate S-polymorph towards high piezoelectricity in La-doped BiFeO3 epitaxial thin films, Acta Materialia 207, 116683 (2021, Jan.)

    2020

    1. Fangping Zhuo, and Chan-Ho Yang, Observation of a stable fractionalized polar skyrmionlike texture with giant piezoelectric response enhancement, Physical Review B 102, 214112 (2020, Dec.)

    2. Hyeon Jun Lee, Jeongyong Kim, Seung Hyun Hwang, Hyeokmin Choe, Semen Gorfman, Yeong-Jae Heo, Su Yong Lee, Pierre-Eymeric Janolin, Igor Kornev, Tobias U. Schülli, Carsten Richter, Joo-Hyoung Lee, Ullrich Pietsch, Chan-Ho Yang, and Ji Young Jo, Electrically driven transient and permanent phase transformations in highly strained epitaxial BiFeO3 thin films, APL Materials 8 (41), 101110 (2020, Oct.)

    3. Ji Soo Lim, Jounghee Lee, Byeoung Ju Lee, Yong-Jin Kim, Heung-Sik Park, Jeonghun Suh, Ho-Hyun Nahm, Sang-Woo Kim, Byeong-Gwan Cho, Tae Young Koo, Eunjip Choi, Yong-Hyun Kim, and Chan-Ho Yang, Harnessing the topotactic transition in oxide heterostructures for fast and high-efficiency electrochromic applications, Science Advances 6 (41), eabb8553 (2020, Oct.)

    4. Shinhee Yun, Kyung Song, Kanghyun Chu, Soo-Yoon Hwang, Gi-Yeop Kim, Jeongdae Seo, Chang-Su Woo, Si-Young Choi, and Chan-Ho Yang, Flexopiezoelectricity at ferroelastic domain walls in WO3 films, Nature Communications 11, 4898 (2020, Sep.)

    5. Ji Soo Lim, and Chan-Ho Yang, Charge-neutral defects control conductivity (News & Views), Nature Materials 19, 1132-1133 (2020, Aug.)

    6. Han-Byul Jang, Ji Soo Lim, and Chan-Ho Yang, Film-thickness-driven superconductor to insulator transition in cuprate superconductors, Scientific Reports 10, 3236 (2020, Feb.)

    7. Jungsik Park, Jae Hoon Shin, Kyung Song, Yong-Jin Kim, Han-Byul Jang, Hyungwoo Lee, H.-S. Sim, and Chan-Ho Yang, Non-Ohmic conduction in exfoliated La0.7Ca0.3MnO3 thin films, Applied Physics Letters 116, 022401 (2020, Jan.)

    8. Yong-Jin Kim, and Chan-Ho Yang, Electret formation in transition metal oxides by electrochemical amorphization, NPG Asia Materials 12, 1 (2020, Jan.)

    2019

    1. Heung-Sik Park, Ji Soo Lim, Jeonghun Suh, and Chan-Ho Yang, Real-time observation of filamentary conduction pathways in Ca-doped BiFeO3, Appl. Phys. Lett. 115, 183901 (2019, Oct.)

    2. Jeongyong Kim, Mujin You, Kwang-Eun Kim, Kanghyun Chu, and Chan-Ho Yang, Artificial creation and separation of a single vortex-antivortex pair in a ferroelectric flatland, npj Quantum Materials 4, 29 (2019, Jun.)

    3. Tae Kwon Lee, Dae Sol Kong, Da Woon Jin, Shinhee Yun, Chan-Ho Yang, and Jong Hoon Jung, Proton-irradiated Pb(Zr0.52Ti0.48)O3 thick films for flexible non-volatile memory applications, Current Applied Physics 19, 728-732 (2019, Mar.)

    2018

    1. Seung Ran Lee, Lkhagvasuren Baasandorj, Jung Won Chang, In Woong Hwang, Jeong Rae Kim, Jeong-Gyu Kim, Kyung-Tae Ko, Seung Bo Shim, Min Woo Choi, Mujin You, Chan-Ho Yang, Jinhee Kim, and Jonghyun Song, First observation of ferroelectricity in ~ 1nm ultrathin semiconducting BaTiO3 films, Nano Letters 19, 2243-2250 (2019, Mar.)

    2. Kanghyun Chu, and Chan-Ho Yang, High-resolution angle-resolved lateral piezoresponse force microscopy: Visualization of in-plane piezoresponse vectors, Review of Scientific Instruments 89, 123704 (2018, Dec.)

    3. Kwang-Eun Kim, and Chan-Ho Yang, Local magnetostriction measurement in a cobalt thin film using scanning probe microscopy, AIP Advances 8, 105125 (2018, Oct.)

    4. Ji Soo Lim, Jin Hong Lee, Heung-Sik Park, Ran Gao, Tae Yeong Koo, Lane W.Martin, Ramamoorthy Ramesh, and Chan-Ho Yang, Ultrafast collective oxygen-vacancy flow in Ca-doped BiFeO3, NPG Asia Materials 10, 943-955 (2018, Sep.)

    5. Kwang-Eun Kim, Yong-Jin Kim, Yang Zhang, Fei Xue, Gi-Yeop Kim, Kyung Song, Si-Young Choi, Jun-Ming Liu, Long-Qing Chen, and Chan-Ho Yang, Ferroelastically protected polarization switching pathways to control electrical conductivity in strain-graded ferroelectric nanoplates, Physical Review Materials 2, 084412 (2018, Aug.)

    6. Chang Jae Roh, Jin Hong Lee, Kwang-Eun Kim, Chan-Ho Yang, and Jong Seok Lee, Deterministic domain reorientations in the BiFeO3 thin film upon the thermal phase transitions, Applied Physics Letters 113, 052904 (2018, Jul.)

    7. Chang-Su Woo, Kanghyun Chu, Jong-Hyun Song, and Chan-Ho Yang, Multiple relaxations of the cluster surface diffusion in a homoepitaxial SrTiO3 layer, Applied Physics Letters 112, 131602 (2018, Mar.)

    8. Jin Hong Lee, Byung-Kweon Jang, Kyung Rok Kang, Dong-Jun Kim, Byong-Guk Park, and Chan-Ho Yang, Largely enhanced coercivity of cobalt adjacent to straight-stripe mixed-phase bismuth ferrites, Physical Review B 97, 104420 (2018 Mar.)

    9. Abdullah Alsubaie, Pankaj Sharma , Jin Hong Lee, Jeong Yong Kim, Chan-Ho Yang, and Jan Seidel, Uniaxial Strain-Controlled Ferroelastic Domain Evolution in BiFeO3, ACS Applied Materials & Interfaces 10, 11768 (2018 Mar.)

    10. P Sharma, K-R Kang, Y-Y Liu, B-K Jang, J-Y Li, C-H Yang, and J Seidel, Optimizing the electromechanical response in morphotropic BiFeO3, Nanotechnology 29, 205703 (2018, Mar.)

    11. Kwang-Eun Kim, Seuri Jeong, Kanghyun Chu, Jin Hong Lee, Gi-Yeop Kim, Fei Xue, Tae Yeong Koo, Long-Qing Chen, Si-Young Choi, Ramamoorthy Ramesh & Chan-Ho Yang, Configurable topological textures in strain graded ferroelectric nanoplates, Nature Communications 9, 403 (2018, Jan.)

    12. Marco Campanini, Rolf Erni, Chan−Ho Yang, Ramamoorthy Ramesh, and Marta D. Rossell, Periodic Giant Polarization Gradients in Doped BiFeO3 Thin Films, Nano Letters 18, 717-724 (2018, Jan.)

    13. Hyeon Han, Donghoon Kim, Kanghyun Chu, Jucheol Park, Sang Yeol Nam, Seungyang Heo, Chan-Ho Yang, and Hyun Myung Jang, Enhanced Switchable Ferroelectric Photovoltaic Effects in Hexagonal Ferrite Thin Films via Strain Engineering, ACS Applied Materials & Interfaces, 10 (2), 1846-1853 (2018 Jan.)

    2017

    1. Kanghyun Chu and Chan-Ho Yang, Nonlinear flexoelectricity in noncentrosymmetric crystals, Physical Review B 96, 104102 (2017, Sep.)

    2. Jin Hong Lee, Kwang-Eun Kim, Byung-Kweon Jang, Ahmet A. Ünal, Sergio Valencia, Florian Kronast, Kyung-Tae Ko, Stefan Kowarik, Jan Seidel, and Chan-Ho Yang, Strain-gradient-induced magnetic anisotropy in straight-stripe mixed-phase bismuth ferrites: Insight into flexomagnetism, Physical Review B 96, 064402 (2017, Aug.)

    3. Gi-Yeop Kim, Kanghyun Chu, Kil-Dong Sung, Hak-Sung Lee, Sung-Dae Kim, Kyung Song, Taekjib Choi, Jaichan Lee, James P. Buban, Seog-Young Yoon, Kwang-Ho Kim, Chan-Ho Yang, and Si-Young Choi, Disordered ferroelectricity in the PbTiO3/SrTiO3 superlattice thin film , APL Materials 5, 066104 (2017, Jun.)

    4. Abhijit Biswas, Chan-Ho Yang, Ramamoorthy Ramesh, and Yoon H. Jeong, Atomically flat single terminated oxide substrate surfaces, Progress in Surface Science 92, 117-141 (2017, May)

    5. Chang Jae Roh, Sun Young Hamh, Chang-Soo Woo, Kwang-Eun Kim, Chan-Ho Yang, and Jong Seok Lee, Ferroelectric domain states of a tetragonal BiFeO3 thin film investigated by second harmonic generation microscopy, Nanoscale Research Letters 12:353 (2017, May)

    6. Yooun Heo, Songbai Hu, Pankaj Sharma, Kwang-Eun Kim, Byung-Kweon Jang, Claudio Cazorla, Chan-Ho Yang, and Jan Seidel, Impact of Isovalent and Aliovalent Doping on Mechanical Properties of Mixed Phase BiFeO3, ACS Nano 11, 2805-2813 (2017, Feb.)

    7. Byung-Kweon Jang, Jin Hong Lee, Kanghyun Chu, Pankaj Sharma, Gi-Yeop Kim, Kyung-Tae Ko, Kwang-Eun Kim, Yong-Jin Kim, Kyungrok Kang, Han-Byul Jang, Hoyoung Jang, Min Hwa Jung, Kyung Song, Tae Yeong Koo, Si-Young Choi, Jan Seidel, Yoon Hee Jeong, Hendrik Ohldag, Jun-Sik Lee, and Chan-Ho Yang, Electric-field-induced spin disorder-to-order transition near a multiferroic triple phase point, Nature Physics 13, 189-196 (2017, Feb.)

    8. Hae Jin Seog, Chang Won Ahn, Shinuk Cho, Kwang-Eun Kim,Chan-Ho Yang, Tae Yeong Koo, Sun-Young Lee, Jong Pil Kim, and Ill Won Kim, Downward self-polarization of lead-free (K0.5Na0.5)(Mn0.005Nb0.995)O3 ferroelectric thin films on Nb:SrTiO3 substrate, physica status solidi (RRL) - Rapid Research Letters 11, 1600235 (2017, Jan.)

    9. S. Hu, A. Alsubaie, Y. Wang, J. H. Lee, K.-R. Kang, C.-H. Yang, and J. Seidel, Poisson's ratio of BiFeO3 thin films: X-ray reciprocal space mapping under variable uniaxial strain, physica status solidi (a) 214, 1600356 (2017, Jan.)

    2016

    1. Pankaj Sharma, Kyung Rok Kang, Byung-Kweon Jang, Chan-Ho Yang, and Jan Seidel, Unraveling Elastic Anomalies during Morphotropic Phase Transitions, Advanced Electronic Materials 2, 1600283 (2016, Dec.)

    2. Yong-Jin Kim, Jin Hong Lee, Sang-Woo Kim, Tae Yeong Koo, and Chan-Ho Yang, Orientation control of the orbital ordering plane in epitaxial LaMnO3 thin films by misfit strain, Europhysics Letters 116, 27003 (2016, Nov.)

    3. P. Sharma, Y. Heo, B.-K. Jang, Y. Y. Liu, J. Y. Li, C.-H. Yang, and J. Seidel, Structural and electronic transformation pathways in morphotropic BiFeO3, Scientific Reports 6, 32347 (2016, Sep.)

    4. Yooun Heo, Jin Hong Lee, Lin Xie, Xiaoqing Pan, Chan-Ho Yang, and Jan Seidel, Enhanced conductivity at orthorhombic–rhombohedral phase boundaries in BiFeO3 thin films, NPG Asia Materials 8, e297 (2016, Aug.)

    5. Ji Soo Lim, Jin Hong Lee, Atsushi Ikeda-Ohno, Takuo Ohkochi, Ki-Seok Kim, Jan Seidel, and Chan-Ho Yang, Electric-field-induced insulator to Coulomb glass transition via oxygen-vacancy migration in Ca-doped BiFeO3, Physical Review B 94, 035123 (2016, Jul.)

    6. Jin Hong Lee, Kanghyun Chu, Kwang-Eun Kim, Jan Seidel, and Chan-Ho Yang, Out-of-plane three-stable-state ferroelectric switching: Finding the missing middle states, Physical Review B 93, 115142 (2016, Mar.)

    7. Pankaj Sharma,, Yooun Heo, Byung-Kweon Jang, Yunya Liu, Valanoor Nagarajan, Jiangyu Li, Chan-Ho Yang and Jan Seidel, Morphotropic Phase Elasticity of Strained BiFeO3, Advanced Materials Interfaces 3, 1600033 (2016, Mar.)

    2015

    1. Shinhee Yun, Chang-Su Woo, Gi-Yeop Kim, Pankaj Sharma, Jin Hong Lee, Kanghyun Chu, Jong Hyun Song, Sung-Yoon Chung, Jan Seidel, Si-Young Choi and Chan-Ho Yang, Ferroelastic twin structures in epitaxial WO3 thin films, Applied Physics Letters 107, 252904 (2015, Dec.)

    2. Kanghyun Chu, Byung-Kweon Jang, Ji Ho Sung, Yoon Ah Shin, Eui-Sup Lee, Kyung Song, Jin Hong Lee, Chang-Su Woo, Seung Jin Kim, Si-Young Choi, Tae Yeong Koo, Yong-Hyun Kim, Sang-Ho Oh, Moon-Ho Jo, and Chan-Ho Yang, Enhancement of the anisotropic photocurrent in ferroelectric oxides by strain gradients, Nature Nanotechnology 10, 972–979 (2015, Aug.)

    3. Hoyoung Jang, Glen Kerr, Ji Soo Lim, Chan-Ho Yang, Chi-Chang Kao & Jun-Sik Lee, Orbital reconstruction in a self-assembled oxygen vacancy nanostructure, Scientific Reports 5, 12402 (2015, Jul.)

    4. Songbai Hu, Zengji Yue, Ji Soo Lim, Sara J. Callori, Joel Bertinshaw, A. Ikeda-Ohno, Takuo Ohkochi, Chan-Ho Yang, X. Wang, Clemens Ulrich and Jan Seidel, Growth and Properties of Fully Strained SrCoOx (x ≈ 2.8) Thin Films on DyScO3, Advanced Materials Interfaces 2, 1500012 (2015 Apr.)

    2014

    1. Yooun Heo, Byong-Kweon Jang, Seung Jin Kim, Chan-Ho Yang, and Jan Seidel, Nanoscale mechanical softening of morphotropic BiFeO3, Advanced Materials 26, 7568-7572 (2014, Dec.)

    2. 이진홍(Jin Hong Lee), 양찬호(Chan-Ho Yang), 다강성 비스무트 페라이트 박막 연구 동향 및 전망(Multiferroic bismuth-ferrite thin films: progress and perspectives), 물리학과 첨단기술 23, 15-22 (2014년 11월)

    3. Atsushi Ikeda-Ohno, Ji Soo Lim, Takuo Ohkochi, Chan-Ho Yang and Jan Seidel, Investigation of continuous changes in the electric-field-induced electronic state in Bi1−xCaxFeO3−δ, Physical Chemistry Chemical Physics 16, 17412-17416 (2014, Jul.)

    4. Jin Hong Lee, Kanghyun Chu, Ahmet A. Ünal, Sergio Valencia, Florian Kronast, Stefan Kowarik, Jan Seidel, and Chan-Ho Yang, Phase separation and electrical switching between two isosymmetric multiferroic phases in tensile strained BiFeO3 thin films, Physical Review B 89, 140101(R) (2014, Apr.)

    5. Kwang-Eun Kim, Byung-Kweon Jang, Yooun Heo, Jin Hong Lee, Myoungho Jeong, Jeong Yong Lee, Jan Seidel and Chan-Ho Yang, Electric control of straight stripe conductive mixed-phase nanostructures in La-doped BiFeO3, NPG Asia Materials 6, e81 (2014, Jan.)

    2013

    1. Abhijit Biswas, Pim B. Rossen, Jayakanth Ravichandran, Ying-Hao Chu, Y.-W. Lee, Chan-Ho Yang, Ramamoorthy Ramesh, and Y. H. Jeong, Selective A- or B-site single termination on surfaces of layered oxide SrLaAlO4, Applied Physics Letters 102, 051603 (2013, Feb.)

    2. Ji Ho Sung, Won-Mo Lee, Jin Hong Lee, Kanghyun Chu, Donghun Lee, Xavier Moya, Neil D Mathur, Chan-Ho Yang, Jae-Hoon Park and Moon-Ho Jo, Single ferroelectric-domain photovoltaic switch based on lateral BiFeO3 cells, NPG Asia Materials 5, e38 (2013, Feb.)

    3. K. Kamala Bharathi, Won-Mo Lee, Ji Ho Sung, Ji Soo Lim, Seung Jin Kim,Kanghyun Chu, Jung Won Park, Jong Hyun Song, Moon-Ho Jo, and Chan-Ho Yang, Detection of electrically formed photosensitive area in Ca-doped BiFeO3 thin films, Applied Physics Letters 102, 012908 (2013, Jan.)

    2012

    1. Chan-Ho Yang, Daisuke Kan, Ichiro Takeuchi, Valanoor Nagarajan, and Jan Seidel, Doping BiFeO3: approaches and enhanced functionality, Phys. Chem. Chem. Phys.14, 15953 (2012) (Invited perspective)

    2. Chang-Su Woo, Jin Hong Lee, Kanghyun Chu, Byung-Kweon Jang, Yong-Bae Kim, Tae Yeong Koo, Ping Yang, Yajun Qi, Zuhuang Chen, Lang Chen, Hong Chul Choi, Ji Hoon Shim, and Chan-Ho Yang, Suppression of mixed-phase areas in highly elongated BiFeO3 thin films on NdAlO3 substrates, Phys. Rev. B 86, 054417 (2012)

    3. P. Yu, W. Luo, D. Yi, J. X. Zhang, M. D. Rossell, C.-H. Yang, L. You, G. Singh-Bhalla, S. Y. Yang, Q. He, Q. M. Ramasse, R. Erni, L. W. Martin, Y. H. Chu, S. T. Pantelides, S. J. Pennycook, and R. Ramesh, Interface control of bulk ferroelectric polarization, Proc. Natl. Acad. Sci. U.S.A., 109, 9710-9715 (2012)

    4. J. Seidel, W. Luo, S.J. Suresha, P.-K. Nguyen, A.S. Lee, S.-Y. Kim, C.-H. Yang, S.J. Pennycook, S.T. Pantelides, J.F. Scott, and R. Ramesh, Prominent electrochromism through vacancy-order melting in a complex oxide , Nature Communications 3, 799 (24 April 2012)

    5. Won-Mo Lee, Ji Ho Sung, Kanghyun Chu, Xavier Moya, Donghun Lee, Cheol-Joo Kim, Neil D. Mathur, S.-W. Cheong, C.-H. Yang, and Moon-Ho Jo, Spatially Resolved Photodetection in Leaky Ferroelectric BiFeO3, Adv. Mater. 24, 1521-4095 (27 JAN 2012)

    2011

    1. Kyung-Tae Ko, Min Hwa Jung, Qing He, Jin Hong Lee, Chang Su Woo, Kanghyun Chu, Jan Seidel, Byung-Gu Jeon, Yoon Seok Oh, Kee Hoon Kim, Wen-I Liang, Hsiang-Jung Chen, Ying-Hao Chu, Yoon Hee Jeong, Ramamoorthy Ramesh, Jae-Hoon Park, and Chan-Ho Yang, Concurrent transition of ferroelectric and magnetic ordering near room temperature, Nature Communications 2, 567 (2011)

    2. K.-Y. Choi, S. H. Do, P. Lemmens, D. Wulferding, C. S. Woo, J. H. Lee, K. Chu, and C.-H.Yang, Anomalous low-energy phonons in nearly tetragonal BiFeO3 thin films, Phys. Rev. B 84, 132408 (2011)

    3. S.C. Kehr, Y.M. Liu, L.W. Martin, P. Yu, M. Gajek, S.-Y. Yang, C.-H.Yang, M.T. Wenzel, R. Jacob, H.-G. von Ribbeck, et al., Near-field examination of perovskite-based superlenses and superlens-enhanced probe-object coupling, Nature Communications 2, 249 (22 March 2011)

    4. A. Biswas, P. B. Rossen, C.-H. Yang, W. Siemons, M.-H. Jung, I. K. Yang1, R. Ramesh, and Y. H. Jeong, Universal Ti-rich termination of atomically flat SrTiO3 (001), (110), and (111) surfaces Appl. Phys. Lett. 98, 051904 (2011)

    2010

    1. J. Seidel, P. Maksymovych, Y. Batra, A. Katan, S.-Y. Yang, Q. He, A. P. Baddorf, S. V. Kalinin, C.-H. Yang, J.-C. Yang, Y.-H. Chu, E. K. H. Salje, H. Wormeester, M. Salmeron, and R. Ramesh, Domain Wall Conductivity in La-Doped BiFeO3 Phys. Rev. Lett. 105, 197603 (2010)

    2. Josee E. Kleibeuker, Gertjan Koster, Wolter Siemons, David Dubbink, Bouwe Kuiper, Jeroen L. Blok, Chan-Ho Yang, Jayakanth Ravichandran, Ramamoorthy Ramesh, Johan E. ten Elshof, Dave H. A. Blank, and Guus Rijnders, Atomically Defined Rare Earth Scandate Crystal Surfaces, Adv. Funct. Mater. 20, 3490–3496, (October 22, 2010)

    3. P. Yu, J. S. Lee, S. Okamoto, M. D. Rossell, M. Huijben, C.-H. Yang, Q. He, J. X. Zhang, S. Y. Yang, M. J. Lee, Q. M. Ramasse, R. Erni, Y. H. Chu, D. A. Arena, C. C. Kao, L. W. Martin, and R. Ramesh, Interface Ferromagnetism and Orbital Reconstruction in BiFeO3-La0.7Sr0.3MnO3 Heterostructures, Phys. Rev. Lett. 105, 027201 (2010).

    4. M. B. Holcomb, L. W. Martin, A. Scholl, Q. He., P. Yu, C.-H. Yang, S. Y. Yang, P. A. Glans, M. Valvidares, M. Huijben, J. B. Kortright, J. Guo, Y. H. Chu, and R. Ramesh, Probing the Evolution of Antiferromagnetism in Multiferroics, Phys. Rev. B 81, 134406 (2010).

    5. S. Y. Yang, J. Seidel, S. J. Byrnes, P. Shafer, C.-H. Yang, M. D. Rossell, P. Yu, Y. H. Chu, J. F. Scott, J. W. Ager, L. W. Martin, and R. Ramesh, Above-bandgap Voltages from Ferroelectric Photovoltaic Devices, Nature Nanotechnology 5, 143 (2010).

    1999~2009

    1. S. Y. Yang, L. W. Martin, S. J. Byrnes, T. E. Conry, S. R. Basu, D. Paran, L. Reichertz, J. Ihlefeld, C. Adamo, A. Melville, Y. H. Chu, C.-H. Yang, J. L. Musfeldt, D. G. Schlom, J. W. Ager, and R. Ramesh, Photovoltaic effects in BiFeO3, Appl.Phys.Lett.95, 062909 (2009).

    2. R. J. Zeches, M. D. Rossell, J. X. Zhang, A. J. Hatt, Q. He, C.-H. Yang, A. Kumar, C. H. Wang, A. Melville, C. Adamo, G. Sheng, Y. H. Chu, J. F. Ihlefeld, R. Erni, C. Ederer, V. Gopalan, Chen L. Q., D. G. Schlom, N. A. Spaldin, L. W. Martin, and R. Ramesh, A Strain-Driven Morphotropic Phase Boundary in BiFeO3, Science 326, 977 (2009).

    3. C.-H. Yang, J. Seidel, S. Y. Kim, P. B. Rossen, P. Yu, M. Gajek, Y. H. Chu, L. W. Martin, M. B. Holcomb, Q. He, P. Maksymovych, N. Balke, S. V. Kalinin, A. P. Baddorf, S. R. Basu, M. L. Scullin, and R. Ramesh, Electric Modulation of Conduction in Multiferroic Ca-doped BiFeO3 Films, Nature Materials 8, 485-493 (2009).

    4. Y.-H. Chu, Q. He, C.-H. Yang, P. Yu, L. W. Martin, P. Schafer, and R. Ramesh, Nanoscale Control of Domain Architectures in BiFeO3 Thin Films, Nano Lett. 9, 1726-1730 (2009).

    5. L. W. Martin, S. P. Crane, Y.-H. Chu, M. B. Holcomb, M. Gajek, M. Huijben, C.-H. Yang, N. Balke, and R. Ramesh, Multiferroics and Magnetoelectronics: Thin Films and Nanostructures, J. Phys.:Condens. Matter 20, 434220 (2008). (Invited review)

    6. Y.-H. Chu, L. W. Martin, M. B. Holcomb, M. Gajek, S.-J. Han, Q. He, N. Balke, C.-H. Yang, D. Lee, W. Hu, Q. Zhan, P.-L. Yang, A. Fraile-Rodriguez, A. Scholl, S. X. Wang, and R. Ramesh, Electric-field Control of Local Ferromagnetism Using a Magnetoelectric Multiferroic, Nature Materials 7, 478 (2008).

    7. Y.-H. Chu, Q. Zhan, C.-H. Yang, M. P. Cruz, L. W. Martin, T. Zhao, P. Yu, R. Ramesh, P. T. Joseph, I. N. Lin, W. Tian, and D. G. Schlom, Low Voltage Performance of Epitaxial BiFeO3 Films on Si Substrates through Lanthanum-Substitution, Appl. Phys. Lett. 92, 102909 (2008).

    8. J. Koo, C. Song, S. Ji, J.-S. Lee, J. Park, T.-H. Jang, C.-H. Yang, J.-H. Park, Y. H. Jeong, K.-B. Lee, T.Y. Koo, Y.J. Park, J.-Y. Kim, D. Wermeill, A.I. Goldman, G. Srajer, S. Park, and S.-W. Cheong, Non-resonant and Resonant X-ray Scattering Studies on Multiferroic TbMn2O5, Phys. Rev. Lett. 99, 197601 (2007).

    9. C.-H. Yang, S-H. Lee, T. Y. Koo, and Y. H. Jeong, Dynamically Enhanced Magnetodielectric Effects and Magnetic Field Controlled Electric Relaxations in La-modified BiMnO3., Phys. Rev. B 75(14), 140104 (2007).

    10. C.-H. Yang, F. Yildiz, S.-H. Lee, Y. H. Jeong, U. Chon, T. Y. Koo, Synthesis of Nanoscale Composites of Exchange biased MnFe2O4 and Mn-doped BiFeO3., Appl. Phys. Lett. 90(16), 163116 (2007).

    11. Ying-Hao Chu, Maria P. Cruz, Chan-Ho Yang, Lane W. Martin, Pei-Ling Yang, Kilho Lee, Pu Yu, and Ramamoorthy Ramesh, Domain Control in Multiferroic BiFeO3 Through Substrate Vicinality, Adv. Mater. 19, 2662 (2007).

    12. Y. H. Chu, T. Zhao, M. P. Cruz, Q. Zhan, P. L. Yang, L. W. Martin, M. Huijben, C.-H. Yang, F. Zavaliche, H. Zheng, and R. Ramesh, Ferroelectric Size Effects in Multiferroic BiFeO3 Thin Films, Appl. Phys. Lett. 90, 252906 (2007).

    13. T.-H. Jang, R. Muralidharan, C.-H. Yang, T. Y. Koo, Y. H. Jeong, Control of Multiferroic Phase in Tb1-x(Bi,La,Y)xMnO3., Journal of Magnetism and Magnetic Materials 310(2, Pt. 2), 1171-1173 (2007).

    14. R. Muralidharan, T.-H. Jang, C.-H. Yang, Y. H. Jeong, T. Y. Koo. Magnetic Control of Spin Reorientation and Magnetodielectric Effect below the Spin Compensation Temperature in TmFeO3., Appl. Phys. Lett. 90(1), 012506 (2007).

    15. C.-H. Yang, J. Koo, C. Song, T. Y. Koo, K.-B. Lee, and Y. H. Jeong, Resonant X-ray Scattering Study on Multiferroic BiMnO3., Phys. Rev. B. 73(22), 224112 (2006).

    16. C.-H. Yang, T. Y. Koo, S-H. Lee, C. Song, K.-B. Lee, and Y. H. Jeong, Orbital Ordering and Enhanced Magnetic Frustration of Strained BiMnO3 Thin Films., Europhysics Lett. 74(2), 348-354 (2006).

    17. S.-H. Lee, C.-H. Yang, Y. H. Jeong, and N. O. Birge, Piezoelectric Coefficient of BiFe1-xMnxO3 Thin Films Measured by Piezoresponse Force Microscopy., Physica B 383(1), 31-32 (2006).

    18. C.-H. Yang, H. J. Lee, Y. B. Kim, S-J. Han, Y. H. Jeong, and N. O. Birge, Magnetoresistance in Fe and Cu Co-doped ZnO Thin Films., Physica B 383(1), 28-30 (2006).

    19. C.-H. Yang, T. Y. Koo, Y. H. Jeong, How to Obtain Magnetocapacitance Effects at Room Temperature: The case of Mn-doped BiFeO3., Solid State Commun. 134(4), 299-301 (2005).

    20. C.-H. Yang, J. H. Song, S. H. Park, Y. N. Choi, C.-H. Lee, and Y. H. Jeong, High Resolution Neutron Powder Diffraction and Elastic Constant Measurements of La0.625Ca0.375MnO3 at High Temperatures., Journal of the Physical Society of Japan 73(11), 3051-3058 (2004).

    21. C.-H. Yang, J. H. Song, H. J. Lee, S. Yoon, T. Y. Koo, and Y. H. Jeong, New Materials Search for Spintronics Applications: Synthesis of BiMn1-xFexO3 Films via Combinatorial Chemistry., Physica Status Solidi B: Basic Research 241(7), 1453-1457 (2004). (invited)

    22. S-J. Han, J. W. Song, C.-H. Yang, S. H. Park, J.-H. Park, Y. H. Jeong, and K. W. Rhie, A Key to Room-Temperature Ferromagnetism in Fe-doped ZnO:Cu., Appl. Phys. Lett. 81(22), 4212-4214 (2002).

    23. Chan-Ho Yang, N. D. Kim, Kwangyl Park, and Sung-Ho S. Salk, Stripe Phase Orders of Charge and Spin for the 2-D Systems of Strongly Correlated Electrons at and near Half-filling., Physica B: Condensed Matter(Amsterdam) 259-261, 764-765 (1999).

    PATENTS AND PATENT APPLICATIONS

    1. Chan-Ho Yang, and Ji Soo Lim, Bismuth calcium ferrites for electrolyte having high oxygen ionic mobility¸ PCT/KR2019/010530 (2019)
    2. Chan-Ho Yang, and Ji Soo Lim, Bismuth calcium ferrites for electrolyte having high oxygen ionic mobility¸ Europe (P-17231-EP) (2019)
    3. Chan-Ho Yang, and Ji Soo Lim, Bismuth calcium ferrites for electrolyte having high oxygen ionic mobility¸ USA (P-17231-US) (2019)
    4. Chan-Ho Yang, and Kwang-Eun Kim, Focused-Magnetic-Field Vibration-Response Microscopy, Korea (Patent Registered, 10-1793524) (2017)

    REPRESENTATIVE MEDIA RELEASES AND HIGHLIGHTS

    1. 2018 KAIST press release regarding “Development of electric topological defect control technology”
    2. 2017 the paper “Disordered ferroelectricity in the PbTiO3/SrTiO3 superlattice thin film” was chosen as the 1st place winner of the 2017 APL Materials Excellence in Research Award
    3. 2017 Nature Physics (News and Views) : “Multiferroics: Making a point of control”
    4. 2016 KAIST press release regarding “Electric-field-induced spin disorder to order transition near a multiferroic triple phase point”
    5. 2016 APL Editors’ Picks : “Ferroelastic twin structures in epitaxial WO3 thin films” selected as one of the most highly read papers from 2016 that caught the eye of the scientists who serve as editors of APL.
    6. 2015 AAPPS Bulletin (Physics Focus) : “Flexoelectrical Enhancement of Anisotropic Photocurrents Arising from Interfacial Strain Gradients”
    7. 2015 KAIST press release regarding “Enhancement of the anisotropic photocurrent in ferroelectric oxides by strain gradients”
    8. 2015 Nature Nanotechnology (News and Views) : “Multiferroics: Focusing light on flexoelectricity” written by Sergei V. Kalinin & Anna N. Morozovska
    9. 2011 National Research Foundation Korea (NRF-K) press release “Concurrent transition of ferroelectric and magnetic ordering near room temperature”
    10. 2010 Nature Photonics 4, 134-135 “Solar energy : Ferroelectric photovoltaics”
    11. 2010 Nature Physics 6, 78 “Above the gap”
    12. 2009 LBL Today, “Multiferroics – Making a Switch the Electric Way”
      (Lawrence Berkeley National Lab front webpage, etc)
    13. 2009 LBL Today, “Berkeley Researchers Take the Lead Out of Piezoelectrics”
    14. 2008 Nature Materials 7, 425-426 “Multiferroics:Toward a magnetoelectric memory”