Publications

2020

Nonsymmorphic Dirac semimetal and carrier dynamics in the doped spin-orbit-coupled Mott insulator Sr2IrO4

J. W. Han*, Sun-Woo Kim*, W. S. Kyung, C. Kim, G. Cao, X. Chen, S. D. Wilson, Sangmo Cheon✉, and J. S. Lee✉

Physical Review B 102, 041108 (R) (2020)

Momentum dependent dxz/yz band splitting in LaFeAsO

S. S. Huh, Y. S. Kim, W. S. Kyung, J. K. Jung, R. Kappenberger, S. Aswartham, B. Büchner, J. M. Ok, J. S. Kim, C. Dong, J. P. Hu, S. H. Cho, D. W. Shen, J. D. Denlinger, Y. K. Kim & C. Kim✉

Scientific Reports 10, 19377 (2020)

Detection of the Chiral Spin Structure in Ferromagnetic SrRuO3 Thin Film

Hai Huang, Sang-Jun Lee, Bongju Kim✉, Byungmin Sohn, Changyoung Kim, Chi-Chang Kao, and Jun-Sik Lee✉

ACS Applied Materials & Interfaces 12, 37757 (2020)

Work function seen with sub-meV precision through laser photoemission

Yukiaki Ishida✉, Jongkeun Jung, Minsoo Kim, Junyoung Kwon, Younsik Kim, Daun Chung, Inkyung Song, Changyoung Kim, Toshio Otsu, and Yohei Kobayashi

Communications Physics 3, 158 (2020)

Electronic band structure of (111) SrRuO3 thin films: An angle-resolved photoemission spectroscopy study

Hanyoung Ryu, Yukiaki Ishida, Bongju Kim, Jeong Rae Kim, Woo Jin Kim, Yoshimitsu Kohama, Shusaku Imajo, Zhuo Yang, Wonshik Kyung, Sungsoo Hahn, Byungmin Sohn, Inkyung Song, Minsoo Kim, Soonsang Huh, Jongkeun Jung, Donghan Kim, Tae Won Noh, Saikat Das, and Changyoung Kim✉

Physical Review B 102, 041102 (R) (2020)

√2×√2R45° surface reconstruction and electronic structure of  BaSnO3 film

Shoresh Soltani, Sungyun Hong, Bongju Kim, Donghan Kim, Jong Keun Jung, Byungmin Sohn, Tae Won Noh, Kookrin Char, and Changyoung Kim✉

Physical Review Materials 4, 055003 (2020)

Rotation of reflectivity anisotropy due to uniaxial strain along [110]tetr in the electron-doped Fe-based superconductor Ba(Fe0.955Co0.045)2As2

Inho Kwak, Soonsang Huh, Min-Cheol Lee, Younsik Kim, Bumjoo Lee, Y. S. Lee, C. W. Seo, Byung Cheol Park, Thomas Wolf, Changyoung Kim, Tae Won Noh, and K. W. Kim✉

Physical Review B 101, 165136 (2020)

Gate-tunable reversible Rashba-Edelstein effect in a few-layer graphene/2H-TaS2 heterostructure at room temperature

Lijun Li, Jin Zhang, Gyuho Myeong, Wongil Shin, Hongsik Lim, Boram Kim, Seungho Kim, Taehyeok Jin, Stuart Cavill, Beom Seo Kim, Changyoung Kim, Johannes Lischner, Aires Ferreira✉, and Sungjae Cho✉

ACS Nano 14, 5251 (2020)

Absence of Y-pocket in 1-Fe Brillouin zone and reversed orbital occupation imbalance in FeSe

S. S. Huh, J. J. Seo, B. S. Kim, S. H. Cho, J. K. Jung, S. Kim, C. I. Kwon, Jun Sung Kim, Y. Y. Koh, W. S. Kyung, J. D. Denlinger, Y. H. Kim, B. N. Chae, N. D. Kim, Y. K. Kim & C. Kim✉

Communications Physics 3, 52 (2020)

Hump-like structure in Hall signal from ultra-thin SrRuO3  films without inhomogeneous anomalous Hall effect

Byungmin Sohn, Bongju Kim, Jun woo Choi, Seo Hyeong Chang, Jung Hoon Han, Changyoung Kim✉

Current Applied Physics 20, 186 (2020)

2019

Evidence of structural evolution in Sr2RhO4 studied by time-resolved optical reflectivity spectroscopy

Min-Cheol Lee, Inho Kwak, Choong H. Kim, Bumjoo Lee, Byung Cheol Park, Junyoung Kwon, Wonshik Kyung, Changyoung Kim, Tae Won Noh, and Kyungwan Kim

Physical Review B 100, 235139 (2019)

Giant Rashba-type spin splitting in Bi/Ag(111) from asymmetric interatomic-hopping

Jisook Hong, Jun-Won Rhim, Inkyung Song, Changyoung Kim, Seung Ryong Park, Ji Hoon Shim

Journal of Physical Society of Japan 88, 124705 (2019)

Evidence for Helical Hinge Zero Modes in an Fe-Based Superconductor.

Mason Gray, Josef Freudenstein, Shu Yang F. Zhao, Ryan O’Connor, Samuel Jenkins, Narendra Kumar, Marcel Hoek, Abigail Kopec, Soonsang Huh, Takashi Taniguchi, Kenji Watanabe, Ruidan Zhong, Changyoung Kim, G. D. Gu, Kenneth Burch

Nano Letters 19, 4890 (2019)

Lifshitz-Transition-Driven Metal-Insulator Transition in moderately Spin-Orbit-Coupled Sr2-xLaxRhO4

Junyoung Kwon, Minsoo Kim, Dongjoon Song, Yoshiyuki Yoshida, Jonathan Denlinger, Wonshik Kyung*, and Changyoung Kim*

Physical Review Letters 123, 1060401 (2019)

Strong One-dimensional Characteristics of  Hole-Carriers in ReS2 and ReSe2

B. S. Kim, W. S. Kyung, J. D. Denlinger, C. Kim* & S. R. Park*

Scientific Reports 9, 2730 (2019)

Orbital-selective confinement effect of Ru 4d orbitals in SrRuO3 ultrathin film

Soonmin Kang, Yi Tseng, Beom Hyun Kim, Seokhwan Yun, Byungmin Sohn, Bongju Kim, Daniel McNally, Eugenio Paris, Choong H. Kim, Changyoung Kim, Tae Won Noh, Sumio Ishihara, Thorsten Schmitt, and Je-Geun Park

Physical Review B 99, 045113 (2019) 

2018

Experimental Observation of Hidden Berry Curvature in Inversion-Symmetric Bulk 2H-WSe2

Soohyun Cho, Jin-Hong Park, Jisook Hong, Jongkeun Jung, Beom Seo Kim, Garam Han, Wonshik Kyung, Yeongkwan Kim, S.-K. Mo, J. D. Denlinger, Ji Hoon Shim, Jung Hoon Han, Changyoung Kim*, and Seung Ryong Park†

Physical Review Letters 121, 186401 (2018)

Structural investigation of the insulator-metal transition in NiS2-xSex compounds

Garam Han, Sungkyun Choi*, Hwanbeom Cho, Byungmin Sohn, Je-Geun Park, and Changyoung Kim†

Physical Review B 98, 125114 (2018)

Electronic-dimensionality Reduction of Bulk MoS2 by Hydrogen Treatment

Soohyun Cho, Beom Seo Kim, Beomyoung Kim, Wonshik Kyung, Jeongjin Seo, Min Park, JunWoo Jeon, Kiyohisa Tanaka, Jonathan D. Denlinger, Changyoung Kim, Dorj Odkhuu, Byung Hoon Kim and Seung Ryong Park

Physical Chemistry Chemical Physics 20, 23007-23012 (2018)

Intrinsic Spin and Orbital Hall Effects from Orbital Texture

Dongwook Go, Daegeun Jo , Changyoung Kim, and Hyun-Woo Lee

Physical Review Letters 121, 086602 (2018)

Large anomalous Hall current induced by topological nodal lines in a ferromagnetic van der Waals semimetal

Kyoo Kim, Junho Seo, Eunwoo Lee, K.-T. Ko, B. S. Kim, Bo Gyu Jang, Jong Mok Ok, Jinwon Lee, Youn Jung Jo, Woun Kang, Ji Hoon Shim, C. Kim, Han Woong Yeom, Byung Il Min, Bohm-Jung Yang & Jun Sung Kim

Nature Materials 17, 794-799 (2018)

Spectroscopic studies on metal-insulator transition mechanism in correlated materials

So Yeun Kim, Min-Cheol Lee, Garam Han, Marie Kratochvilova, Seokhwan Yun, Soon Jae Moon, Changhee Sohn, Je-Geun Park, Changyoung Kim*, and Tae Won Noh

Advanced Materials, 30, 1704777 (2018)

Pressure-induced metal-insulator transitions in chalcogenide NiS2-xSex

Tayyaba Hussaina, Myeong-jun Oha, Muhammad Naumana, Younjung Joa, Garam Han, Changyoung Kim, Woun Kang

Physica B 536, 235 (2018)

A parallel input composite transimpedance amplifier

D. J. Kim, and C. Kim

Review of Scientific Instruments 89, 014705 (2018) 

2017

Spin-Orbit Coupling and Interband Transitions in the Optical Conductivity of Sr2RhO4

Luke J. Sandilands, Wonshik Kyung, So Yeun Kim, J. Son, J. Kwon, T. D. Kang, Y. Yoshida, S. J. Moon, C. Kim, and Tae Won Noh

Physical Review Letters 119, 267402 (2017)

Possible electric field induced indirect to direct band gap transition in MoSe2

B. S. Kim, W. S. Kyung, J. J. Seo, J. Y. Kwon, J. D. Denlinger, C. Kim* & S. R. Park*

Scientific Reports 7, 5206 (2017)

Element-specific orbital character in a nearly-free-electron superconductor Ag5Pb2O6 revealed by core-level photoemission

Soobin Sinn, Kyung Dong Lee, Choong Jae Won, Ji Seop Oh, Moonsup Han, Young Jun Chang, Namjung Hur, Byeong-Gyu Park, Changyoung Kim, Hyeong-Do Kim & Tae Won Noh

Scientific Reports 7, 4528 (2017)

Electron number-based phase diagram of Pr1-xLaCexCuO4-δ and possible absence of disparity between electron- and hole-doped cuprate phase diagrams

Dongjoon Song, Garam Han, Wonshik Kyung, Jeongjin Seo, Soohyun Cho, Beom Seo Kim, Masashi Arita, Kenya Shimada, Hirofumi Namamate, Masaki Taniguchi, Y. Yoshida, H. Eisaki, Seung Ryong Park, and C. Kim*

Physical Review Letters 118, 137001 (2017)

Photon energy dependent circular dichroism in angle-resolved photoemission from Au(111) surface states

Hanyoung Ryu, Inkyung Song, Beomyoung Kim, Soohyun Cho, Shoresh Soltani, Timur K. Kim, Moritz Hoesch, Choong H. Kim, and Changyoung Kim*

Physical Review B 95, 115144 (2017)

dxz/yz orbital subband structures and chiral orbital angular momentum in the (001) surface states of SrTiO3

Shoresh Soltani, Soohyun Cho, Hanyoung Ryu, Garam Han, Beomyoung Kim, Dongjoon Song, Timur K. Kim, Moritz Hoesch, and Changyoung Kim*

Physical Review B 95, 125103 (2017) 

2016

Electronic structure of the Kitaev material α-RuCl3 probed by photoemission and inverse photoemission spectroscopies

Soobin Sinn, Choong Hyun Kim, Beom Hyun Kim, Kyung Dong Lee, Choong Jae Won, Ji Seop Oh, Moonsup Han, Young Jun Chang, Namjung Hur, Hitoshi Sato, Byeong-Gyu Park, Changyoung Kim, Hyeong-Do Kim & Tae Won Noh

Scientific Reports 6, 39544, (2016)

Determination of of band parameters of bulk 2H-MX2 (M=Mo, W; X=S, Se) by angle resolved photoemission spectroscopy    

Beom Seo Kim, Jun-Won Rhim, Beomyoung Kim, Changyoung Kim, and Seung Ryong Park

Scientific Reports 6, 36389 (2016)

Large linear magnetoresistance in heavily-doped Nb:SrTiO3 epitaxial thin films

Hyunwoo Jin, Keundong Lee, Seung-hyub Baek, jin-Sang Kim, byung-Ki Cheong, Bae Ho Park, Sungwon Yoon, B. J. Suh, Changyoung Kim, S. S. A. Seo, and Suyoun Lee

Scientific Reports 6, 34295 (2016)

Enhanced superconductivity in surface-electron-doped iron pnictide Ba(Fe1.94Co0.06)As2

W. S. Kyung, S. S. Huh, Y. Y. Koh, K. -Y. Choi, M. Nakajima, H. Eisaki, J. D. Denlinger, S. -K. Mo*, C. Kim* & Y. K. Kim*

Nature Materials 15, 1233-1236 (2016)

Superconductivity below 20 K in heavily electron-doped surface layer of FeSe bulk crystal

J. J. Seo, B. Y. Kim, B. S. Kim, J. K. Jeong, J. M. Ok, Jun Sung Kim, J. D. Denlinger, S. -K. Mo, C. Kim* & Y. K. Kim*

Nature Communications 7, 11116 (2016)

2015

Interlayer-state-driven superconductivity in CaC6 studied by angle resolved photoemission spectroscopy

Wonshik Kyung, Yeongkwan Kim, Garam Han, Choonshik Leem, Chul Kim, Yoonyoung Koh, Beomyoung Kim, Youngwook Kim, Jun Sung Kim, Keun Su Kim, Eli Rotenberg, Jonathan D. Denlinger, and Changyoung Kim

Phys. Rev. B 92, 224516 (2015)

Possible role of bonding angle and orbital mixing in iron pnictide superconductivity: Comparative electronic structure studies of LiFeAs and Sr2VO3FeAs

Y. K. Kim, Y. Y. Koh, W. S. Kyung, G. R. Han, B. Lee, Kee Hoon Kim, J. M. Ok, Jun Sung kim, M. Arita, K. Shimada, H. Namatame, M. Taniguchi, S.-K. Mo, and C. Kim

Phys. Rev. B 92, 041116(R) (2015)

Microscopic mechanism for the Rashba spin-band splitting: Perspectives from formation of local orbital angular momentum

Seung Ryong Park, Changyoung Kim

Journal of Electron Spectroscopy and Related Phenomena, Volume 201, May 2015, Pages 6-17

Quantative analysis on electric dipole energy in Rashba band splitting

Jisook Hong, Jun-Won Rhim, Changyoung Kim, Seung Ryong Park & Ji Hoon Shim

Scientific Reports 5, 13488 (2015)