107 citations · 669 across the 18 of their papers we have counts for
18 papers
Supercell formation in epitaxial rare-earth ditelluride thin films
Adrian Llanos, Salva Salmani-Rezaie, Jinwoong Kim +3
Square net tellurides host an array of electronic ground states and commonly exhibit charge-density-wave ordering. Here we report the epitaxy of DyTe on atomically flat MgO…
Bismuth antiphase domain wall: A three-dimensional manifestation of the Su-Schrieffer-Heeger model
Jinwoong Kim, Cheng-Yi Huang, Hsin Lin +2
The Su, Schrieffer and Heeger (SSH) model, describing the soliton excitations in polyacetylene due to the formation of antiphase domain walls (DW) from the alternating bond pattern…
Integer quantum Hall effect and enhanced g-factor in quantum confined Cd3As2 films
Run Xiao, Junyi Zhang, Juan Chamorro +6
We investigate the integer quantum Hall effect in Cd3As2 thin films under conditions of strong to moderate quantum confinement (thicknesses of 10 nm, 12 nm, 15 nm). In all the film…
Direct visualization of surface spin-flip transition in MnBi4Te7
Wenbo Ge, Jinwoong Kim, Ying-Ting Chan +3
We report direct visualization of spin-flip transition of the surface layer in antiferromagnet MnBi4Te7, a natural superlattice of alternating MnBi2Te4 and Bi2Te3 layers, using cry…
Robust A-type order and spin-flop transition on the surface of the antiferromagnetic topological insulator MnBiTe
Paul M. Sass, Jinwoong Kim, David Vanderbilt +2
Here we present microscopic evidence of the persistence of uniaxial A-type antiferromagnetic order to the surface layers of MnBiTe single crystals using magnetic force micr…
Engineering Weyl phases and nonlinear Hall effects in T-MoTe
Sobhit Singh, Jinwoong Kim, Karin M. Rabe +1
MoTe has recently attracted much attention due to the observation of pressure-induced superconductivity, exotic topological phase transitions, and nonlinear quantum effects. Ho…
Negative piezoelectric response of van der Waals layered bismuth tellurohalides
Jinwoong Kim, Karin M. Rabe, David Vanderbilt
The polarization and piezoelectric response of the BiTe (=Cl, Br, and I) layered tellurohalides are computed from first principles. The results confirm a mixed ionic-covalent…
Ferromagnetic Anomalous Hall Effect in Cr-doped BiSe Thin Films via Surface-State Engineering
Jisoo Moon, Jinwoong Kim, Nikesh Koirala +3
The anomalous Hall effect (AHE) is a non-linear Hall effect appearing in magnetic conductors, boosted by internal magnetism beyond what is expected from the ordinary Hall effect. W…
Nearly triple nodal point topological phase in half-metallic GdN
Jinwoong Kim, Heung-Sik Kim, David Vanderbilt
Recent developments in topological semimetals open a way to realize relativistic dispersions in condensed matter systems. One recently studied type of topological feature is the "t…
Hopf-chain networks evolved from triple points
Yuee Xie, Jin Cai, Jinwoong Kim +2
Exotic links and chains attract interests across various disciplines including mathematics, biology, chemistry and physics. Here, we propose that topological Hopf-chain networks, c…
Giant Enhancement of Intrinsic Spin Hall Conductivity in Tungsten via Substitutional Doping
Xuelei Sui, Chong Wang, Jinwoong Kim +4
A key challenge in manipulating the magnetization in heavy-metal/ferromagnetic bilayers via the spin-orbit torque is to identify materials that exhibit an efficient charge-to-spin…
Intrinsic Damping Phenomena from Quantum to Classical Magnets:An ab-initio Study of Gilbert Damping in Pt/Co Bilayer
Farzad Mahfouzi, Jinwoong Kim, Nicholas Kioussis
A fully quantum mechanical description of the precessional damping of Pt/Co bilayer is presented in the framework of the Keldysh Green function approach using {\it ab initio} elect…
Revealing the Hidden Structural Phases of FeRh
Jinwoong Kim, R. Ramesh, Nicholas Kioussis
electronic structure calculations reveal that tetragonal distortion has a dramatic effect on the relative stability of the various magnetic structures (C-…
A pressure-induced topological phase with large Berry curvature in PbSnTe
Tian Liang, Satya Kushwaha, Jinwoong Kim +5
The picture of how a gap closes in a semiconductor has been radically transformed by topological concepts. Instead of the gap closing and immediately re-opening, topological argume…
GdN thin-film: Chern Insulating State on Square Lattice
Zhi Li, Jinwoong Kim, Nicholas Kioussis +6
Using first-principles calculations, we predict a Chern insulating phase in thin films of the ferromagnetic semi-metal GdN. In contrast to previously proposed Chern insulator candi…
Two dimensional topological insulators with tunable band gaps: HgTe and HgSe monolayers
Jin Li, Chaoyu He, Lijun Meng +7
Employing ab initio electronic calculations, we propose a new type of two-dimensional (2D) topological insulator (TI), monolayer (ML) low buckled (LB) mercury telluride (HgTe) and…
Phonon-induced topological insulating phases in group IV-VI semiconductors
Jinwoong Kim, Seung-Hoon Jhi
Development of topological insulating phases in IV-VI compounds under dynamic lattice deformations is studied using first-principles methods. Unlike the static state of topological…
Topological phase transition in Dirac fermionic heterostructures
Jeongwoo Kim, Jinwoong Kim, Ki-Seok Kim +1
Materials with non-trivial topology in their electronic structures enforce the existence of helical Dirac fermionic surface states. We discovered emergent topological phases in the…