Výsledky vyhledávání - "Kyungchan Lee"

Akademický článek

Achieving environmental stability in an atomically thin quantum spin Hall insulator via graphene intercalation

Publikováno v: Nature Communications, Vol 15, Iss 1, Pp 1-7 (2024)

Abstract Atomic monolayers on semiconductor surfaces represent an emerging class of functional quantum materials in the two-dimensional limit — ranging from superconductors and Mott insulators to ferroelectrics and quantum spin Hall insulators. Ind

Externí odkaz: https://doaj.org/article/42ff6d1de7d346b78ee4598be6b73d4a

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Akademický článek

Visualizing band selective enhancement of quasiparticle lifetime in a metallic ferromagnet

Autor: Na Hyun Jo, Yun Wu, Thaís V. Trevisan, Lin-Lin Wang, Kyungchan Lee, Brinda Kuthanazhi, Benjamin Schrunk, S. L. Bud’ko, P. C. Canfield, P. P. Orth, Adam Kaminski

Publikováno v: Nature Communications, Vol 12, Iss 1, Pp 1-7 (2021)

The onset of a ferromagnetic order in metals is often accompanied by a drop in resistivity; however, its effect on electronic quasiparticles is less understood. Here the authors present spectroscopic evidence of quasiparticle lifetime enhancement bel

Externí odkaz: https://doaj.org/article/e0d652055e60498a949947610cdd7bf0

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Akademický článek

Discovery of a weak topological insulating state and van Hove singularity in triclinic RhBi2

Autor: Kyungchan Lee, Gunnar F. Lange, Lin-Lin Wang, Brinda Kuthanazhi, Thaís V. Trevisan, Na Hyun Jo, Benjamin Schrunk, Peter P. Orth, Robert-Jan Slager, Paul C. Canfield, Adam Kaminski

Publikováno v: Nature Communications, Vol 12, Iss 1, Pp 1-8 (2021)

Weak topological insulators (WTI) remain difficult to be observed in experiments. Here, the authors discover a WTI state in RhBi2, where the topological surface states with saddle points result in a van Hove singularity along the (100) direction near

Externí odkaz: https://doaj.org/article/5cc55a8a4b9a4dee92991438e5e6364b

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Akademický článek

A Meta-Analysis: Coronary Artery Calcium Score and COVID-19 Prognosis

Autor: Kevin Kyungmin Lee, Osman Rahimi, Charlie Kyungchan Lee, Amaan Shafi, Dalia Hawwass

Publikováno v: Medical Sciences, Vol 10, Iss 1, p 5 (2022)

Background: Multiple studies have investigated the correlations of mortality, mechanical ventilation, and intensive care unit (ICU) admissions with CAC scores. This analysis overviews the prognostic capability of CAC scoring in mortality, mechanical

Externí odkaz: https://doaj.org/article/8ec74ea79e49432fb3a03fa695a7509c

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Electronic signatures of successive itinerant, antiferromagnetic transitions in hexagonal La2Ni7

Autor: Kyungchan Lee, Na Hyun Jo, Lin-Lin Wang, R A Ribeiro, Yevhen Kushnirenko, Ben Schrunk, Paul C Canfield, Adam Kaminski

Publikováno v: Journal of Physics: Condensed Matter. 35:245501

We use high-resolution angle-resolved photoemission spectroscopy (ARPES) and density functional theory (DFT) calculations to study the electronic and magnetic properties of La2Ni7, an itinerant magnetic system with a series of three magnetic transiti

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a300b82ec64a00ab793fda18ee03feec
https://doi.org/10.1088/1361-648x/acc629

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Emergence of Fermi arcs and novel magnetic splitting in an antiferromagnet

Autor: Benjamin Schrunk, Yevhen Kushnirenko, Brinda Kuthanazhi, Junyeong Ahn, Lin-Lin Wang, Evan O’Leary, Kyungchan Lee, Andrew Eaton, Alexander Fedorov, Rui Lou, Vladimir Voroshnin, Oliver J. Clark, Jaime Sánchez-Barriga, Sergey L. Bud’ko, Robert-Jan Slager, Paul C. Canfield, Adam Kaminski

Publikováno v: Nature

The Fermi arcs are signatures of exotic states in solids because they defy conventional concept of Fermi surfaces as closed contours in momentum space. Fermi arcs were first discovered in cuprates, and caused by the pseudogap. Weyl semimetals provide

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ac2e800ab961aba1aaaa494550e9e4ec
http://arxiv.org/abs/2203.12511

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Evidence for a large Rashba splitting in PtPb4 from angle-resolved photoemission spectroscopy

Autor: Daixiang Mou, Cai-Zhuang Wang, John M. Wilde, Amelia Estry, Andreas Kreyssig, Benjamin Schrunk, Na Hyun Jo, Manh Cuong Nguyen, Adam Kaminski, Kyungchan Lee, Lin-Lin Wang, Yun Wu, Paul C. Canfield, Kai-Ming Ho, Sergey L. Bud'ko

Publikováno v: Physical Review B. 103

We studied the electronic structure of ${\mathrm{PtPb}}_{4}$ using laser angle-resolved photoemission spectroscopy (ARPES) and density functional theory (DFT) calculations. This material is closely related to ${\mathrm{PtSn}}_{4}$, which exhibits exo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::457a607ce42ef4d59a4f73beda506636
https://doi.org/10.1103/physrevb.103.085125

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