H
Heung-Sik Kim
Researcher at Kangwon National University
Publications - 79
Citations - 2328
Heung-Sik Kim is an academic researcher from Kangwon National University. The author has contributed to research in topics: Quantum spin liquid & Electronic structure. The author has an hindex of 22, co-authored 69 publications receiving 1783 citations. Previous affiliations of Heung-Sik Kim include KAIST & Rutgers University.
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Kitaev magnetism in honeycomb RuCl 3 with intermediate spin-orbit coupling
TL;DR: In this article, a strong-coupling spin model for these correlation-assisted 1/2-bands is derived, in which large antiferromagnetic Kitaev interactions emerge along with ferromagnetic Heisenberg interactions.
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Crystal structure and magnetism in α − RuCl 3 : An ab initio study
TL;DR: In this article, the effects of spin-orbit coupling (SOC) and electronic correlations have been investigated on a two-dimensional (2D) honeycomb lattice, and three major results are as follows: (i) SOC suppresses dimerization of Ru atoms and makes the honeycomb closer to an ideal one.
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Crystal-Field Splitting and Correlation Effect on the Electronic Structure of A2IrO3
Hlynur Gretarsson,J. P. Clancy,Xuerong Liu,John Hill,Emil S. Bozin,Yogesh Singh,Soham Manni,Philipp Gegenwart,Jungho Kim,Ayman Said,Diego Casa,Thomas Gog,Mary Upton,Heung-Sik Kim,Jaejun Yu,Vamshi M. Katukuri,Liviu Hozoi,Jeroen van den Brink,Young-June Kim +18 more
TL;DR: The electronic structure of the honeycomb lattice iridates Na(2)IrO(3) and Li(2), which have been investigated using resonant inelastic x-ray scattering (RIXS), suggest that both can be described as spin-orbit Mott insulators, similar to the square lattice IrO(4).
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Crystal structure and magnetism inα−RuCl3: Anab initiostudy
Heung-Sik Kim,Hae-Young Kee +1 more
TL;DR: In this article, the effects of spin-orbit coupling (SOC) and electronic correlations have been investigated on a two-dimensional (2D) honeycomb lattice, and three major results are as follows: (i) SOC suppresses dimerization of Ru atoms and makes the honeycomb closer to an ideal one.
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Spin-orbit excitations and electronic structure of the putative Kitaev magnet α − RuCl 3
L. J. Sandilands,Yao Tian,Anjan Reijnders,Heung-Sik Kim,K. W. Plumb,Young-June Kim,Hae-Young Kee,Kenneth S. Burch +7 more
TL;DR: In this paper, a combination of optical spectroscopy and Raman scattering was applied to study the electronic structure of the Ru ion, revealing a series of orbital excitations involving localized total angular momentum states.