251 citations · 1.3k across the 14 of their papers we have counts for
14 papers
Theoretical investigation of the vertical dielectric screening dependence on defects for few-layered van der Waals materials
Amit Singh, Seunghan Lee, Hyeonhu Bae +3
First-principle calculations were employed to analyze the effects induced by vacancies of molybdenum (Mo) and sulfur (S) on the dielectric properties of few-layered MoS2. We explor…
Field-linear anomalous Hall effect and Berry curvature induced by spin chirality in the kagome antiferromagnet Mn3Sn
Xiaokang Li, Jahyun Koo, Zengwei Zhu +2
During the past two decades, it has been established that a non-trivial electron wave-function topology generates an anomalous Hall effect (AHE), which shows itself as a Hall condu…
Exchange-biased topological transverse thermoelectric effects in a Kagome ferrimagnet
Heda Zhang, Jahyun Koo, Chunqiang Xu +3
Kagome metal TbMn6Sn6 was recently discovered to be a ferrimagnetic topological Dirac material by scanning tunneling microscopy/spectroscopy measurements. Here, we report the obser…
Visualization of Topological Boundary Modes Manifesting Topological Nodal-Point Superconductivity
Abhay Kumar Nayak, Aviram Steinbok, Yotam Roet +10
The extension of the topological classification of band insulators to topological semimetals gave way to the topology classes of Dirac, Weyl, and nodal line semimetals with their u…
Quantum oscillations, Magnetic breakdown and thermal Hall effect in CoSnS
Linchao Ding, Jahyun Koo, Changjiang Yi +7
CoSnS is a ferromagnetic semi-metal with Weyl nodes in its band structure and a large anomalous Hall effect below its Curie temperature of 177 K. We present a detailed…
Giant -axis nonlinear anomalous Hall effect in T-MoTe and WTe
Archana Tiwari, Fangchu Chen, Shazhou Zhong +11
While the anomalous Hall effect can manifest even without an external magnetic field, time reversal symmetry is nonetheless still broken by the internal magnetization of the sample…
Spin and charge interconversion in Dirac semimetal thin films
Wilson Yanez, Yongxi Ou, Run Xiao +17
We report spin-to-charge and charge-to-spin conversion at room temperature in heterostructure devices that interface an archetypal Dirac semimetal, Cd3As2, with a metallic ferromag…
Chirality driven topological electronic structure of DNA-like materials
Yizhou Liu, Jiewen Xiao, Jahyun Koo +1
Topological aspects of the geometry of DNA and similar chiral molecules have received a lot of attention, while the topology of their electronic structure is less explored. Previou…
Giant room temperature anomalous Hall effect and magnetically tuned topology in the ferromagnetic Weyl semimetal Co2MnAl
Peigang Li, Jahyun Koo, Wei Ning +9
Weyl semimetals (WSM) have been extensively studied due to their exotic properties such as topological surface states and anomalous transport phenomena. Their band structure topolo…
Intrinsic anomalous Nernst effect amplified by disorder in a half-metallic semimetal
Linchao Ding, Jahyun Koo, Liangcai Xu +9
Intrinsic anomalous Nernst effect (ANE), like its Hall counterpart, is generated by Berry curvature of electrons in solids. Little is known about its response to disorder. In contr…
Active Learning Algorithm for Computational Physics
Juan Yao, Yadong Wu, Jahyun Koo +2
In large-scale computation of physics problems, one often encounters the problem of determining a multi-dimensional function, which can be time-consuming when computing each point…
Finite-temperature violation of the anomalous transverse Wiedemann-Franz law
Liangcai Xu, Xiaokang Li, Xiufang Lu +7
The Wiedemann-Franz (WF) law links the ratio of electronic charge and heat conductivity to fundamental constants. It has been tested in numerous solids, but the extent of its relev…
Density-Functional Theory and Tight-Binding Studies of the Geometry of Hydrogen Adsorbed on Graphynes
Hunpyo Lee, Jahyun Koo, Massimo Capone +2
Using density-functional theory and a tight-binding approach we investigate the physical origin of distinct favourable geometries of adsorbed hydrogen atoms in various graphyne str…
Cohesion Energetics of Carbon Allotropes : Quantum Monte Carlo Study
Hyeondeok Shin, Sinabro Kang, Jahyun Koo +3
We have performed quantum Monte Carlo calculations to study the cohesion energetics of carbon allotropes, including -bonded diamond, -bonded graphene, - hybri…