12 Result(s)

Article

Publisher Correction: Classification of magnetic order from electronic structure by using machine learning

Yerin Jang, Choong H. Kim, Ara Go in Scientific Reports (2023)

Article

Classification of magnetic order from electronic structure by using machine learning

Identifying the magnetic state of materials is of great interest in a wide range of applications, but direct identification is not always straightforward due to limitations in neutron scattering experiments. I...

Yerin Jang, Choong H. Kim, Ara Go in Scientific Reports (2023)

Article

Tuning orbital-selective phase transitions in a two-dimensional Hund’s correlated system

Hund’s rule coupling (J) has attracted much attention recently for its role in the description of the novel quantum phases of multi-orbital materials. Depending on the orbital occupancy, J can lead to various int...

Eun Kyo Ko, Sungsoo Hahn, Changhee Sohn, Sangmin Lee… in Nature Communications (2023)

Article

Signature of Kondo hybridisation with an orbital-selective Mott phase in 4d Ca_2−xSr_xRuO₄

The heavy fermion state with Kondo-hybridisation (KH), usually manifested in f-electron systems with lanthanide or actinide elements, was recently discovered in several 3d transition metal compounds without f-ele...

Minsoo Kim, Junyoung Kwon, Choong H. Kim, Younsik Kim, Daun Chung… in npj Quantum Materials (2022)

Article

Defect-gradient-induced Rashba effect in van der Waals PtSe₂ layers

Defect engineering is one of the key technologies in materials science, enriching the modern semiconductor industry and providing good test-beds for solid-state physics. While homogenous do** prevails in con...

Junhyeon Jo, Jung Hwa Kim, Choong H. Kim, Jaebyeong Lee… in Nature Communications (2022)

Article

Observation of metallic electronic structure in a single-atomic-layer oxide

Correlated electrons in transition metal oxides exhibit a variety of emergent phases. When transition metal oxides are confined to a single-atomic-layer thickness, experiments so far have shown that they usual...

Byungmin Sohn, Jeong Rae Kim, Choong H. Kim, Sangmin Lee… in Nature Communications (2021)

Article

Electric-field-driven octahedral rotation in perovskite

Rotation of MO₆ (M = transition metal) octahedra is a key determinant of the physical properties of perovskite materials. Therefore, tuning physical properties, one of the most important goals in condensed matter...

Wonshik Kyung, Choong H. Kim, Yeong Kwan Kim, Beomyoung Kim… in npj Quantum Materials (2021)

Article

Chern insulator with a nearly flat band in the metal-organic-framework-based Kagome lattice

Based on first-principles density-functional theory (DFT) calculations, we report that the transition-metal bis-dithiolene, M₃C₁₂S₁₂ (M = Mn and Fe), complexes can be a two-dimensional (2D) ferromagnetic insulato...

Santu Baidya, Seung** Kang, Choong H. Kim, Jaejun Yu in Scientific Reports (2019)

Article

Unconventional spin-phonon coupling via the Dzyaloshinskii–Moriya interaction

Spin-phonon coupling (SPC) plays a critical role in numerous intriguing phenomena of transition metal oxides (TMOs). In 3d and 4d TMOs, the coupling between spin and lattice degrees of freedom is known to origina...

Jaeseok Son, Byung Cheol Park, Choong H. Kim, Hwanbeom Cho… in npj Quantum Materials (2019)

Article

Topological superconductivity in metal/quantum-spin-ice heterostructures

We propose a strategy to achieve an unconventional superconductor in a heterostructure: use a quantum paramagnet (QPM) as a substrate for heterostructure growth of metallic films to design exotic superconducto...

Jian-Huang She, Choong H. Kim, Craig J. Fennie, Michael J. Lawler… in npj Quantum Materials (2017)