125 citations · 322 across the 21 of their papers we have counts for
21 papers
Momentum-Resolved Relaxation-Time Approach for Size-Dependent Conductivity in Anisotropic Metallic Films
YoungJun Lee, Jin Soo Lee, Seungjun Lee +2
Shrinking CMOS interconnect dimensions to the nanometer scale intensifies electron scattering at surfaces, interfaces, and grain boundaries, causing severe conductivity loss and ch…
Magnetic and Crystal Symmetry Effects on Spin Hall Conductivity in Altermagnets
Dameul Jeong, Seoung-Hun Kang, Young-Kyun Kwon
Altermagnets, which reconcile zero net magnetization with pronounced spin splitting, offer fresh opportunities for spin-based functionalities in next-generation electronic and spin…
Interfacial Magnetic Anisotropy of Iron-Adsorbed Ferroelectric Perovskites: First-Principles and Machine Learning Study
Dameul Jeong, Seoung-Hun Kang, Young-Kyun Kwon
The advancement of spin-based devices as a replacement for CMOS technology demands lower spin-switching energy in ferromagnetic (FM) materials. Ferroelectric (FE) materials offer a…
Procedures for assessing the stability of proposed topological materials
Jeonghwan Ahn, Seoung-Hun Kang, Mao-Hua Du +3
We investigate the stability of MnPbBiTe (MPBT), which is predicted to be a magnetic topological insulator (TI), using density functional theory calculations. Our…
Metastability and topology in the magnetic topological insulator MnBiTe
Jeonghwan Ahn, Seoung-Hun Kang, Mina Yoon +2
We study the effect of stacking faults on the topological properties of the magnetic topological insulator MnBiTe (MBT) using density functional theory calculations and…
Universal sublinear resistivity in vanadium kagome materials hosting charge density waves
Shirin Mozaffari, William R. Meier, Richa P. Madhogaria +14
The recent discovery of a charge density (CDW) state in ScVSn at = 91 K offers new opportunities to understand the origins of electronic instabilities in…
A New Two-Dimensional Dirac Semimetal Based on the Alkaline Earth Metal, CaP
Seoung-Hun Kang, Wei Luo, Sinchul Yeom +2
Using an evolutionary algorithm in combination with first-principles density functional theory calculations, we identify two-dimensional (2D) CaP monolayer as a new Dirac semim…
Emergence of a new band and the Lifshitz transition in kagome metal ScVSn with charge density wave
Seoung-Hun Kang, Haoxiang Li, William R. Meier +10
Topological kagome systems have been a topic of great interest in condensed matter physics due totheir unique electronic properties. The vanadium-based kagome materials are particu…
Interplay between Topological States and Rashba States as Manifested on Surface Steps at Room Temperature
Wonhee Ko, Seoung-Hun Kang, Jason Lapano +7
The unique spin texture of quantum states in topological materials underpins many proposed spintronic applications. However, realizations of such great potential are stymied by per…
Reshaped Weyl fermionic dispersions driven by Coulomb interactions in MoTe2
Seoung-Hun Kang, Sangjun Jeon, Hyun-Jung Kim +7
We report the direct evidence of impacts of the Coulomb interaction in a prototypical Weyl semimetal, MoTe2, that alter its bare bands in a wide range of energy and momentum. Our q…
Symmetry-Protected Degeneracies in the Electronic Band Structure of Oxidized Black Phosphorous
Seoung-Hun Kang, Jejune Park, Sungjong Woo +1
We explore the oxidation of a single layer of black phosphorous using ab initio density functional theory calculation. We search for the equilibrium structures of phosphorene oxide…
Symmetry dictated grain boundary state in a two-dimensional topological insulator
Hyo Won Kim, Seoung-Hun Kang, Hyun-Jung Kim +10
Structural imperfections such as grain boundaries (GBs) and dislocations are ubiquitous in solids and have been of central importance in understanding nature of polycrystals. In ad…
Strain Effects on Phase Transitions in Transition Metal Dichalcogenides
Seoung-Hun Kang, Young-Kyun Kwon
We perform density functional theory calculation to investigate the structural and electronic properties of various two-dimensional transition metal dichalcogenides, MX (MTi…
Low Lattice Thermal Conductivity of a Two-Dimensional Phosphorene Oxide
Seungjun Lee, Seoung-Hun Kang, Young-Kyun Kwon
A fundamental understanding of the phonon transport mechanism is important for optimizing the efficiency of thermoelectric devices. In this study, we investigate the thermal transp…
Noncollinear magnetic sampling method for paramagnetic Mott insulator MnO
Sangmoon Yoon, Seoung-Hun Kang, Sangmin Lee +4
We present a new approach based on the static density functional theory (DFT) to describe paramagentic MnO, which is a representative paramagnetic Mott insulator. We appended the s…
Enhanced Thermoelectric Properties in a New Silicon Crystal Si24 with Intrinsic Nanoscale Porous Structure
Kisung Chae, Seoung-Hun Kang, Seon-Myeong Choi +2
Thermoelectric device is a promising next-generation energy solution owing to its capability to transform waste heat into useful electric energy, which can be realized in materials…
Origins of the structural phase transitions in MoTe and WTe
Hyun-Jung Kim, Seoung-Hun Kang, Ikutaro Hamada +1
Layered transition metal dichalcogenides MoTe and WTe share almost similar lattice constants as well as topological electronic properties except their structural phase tran…
Rigid Unit Modes in - Hybridized Carbon Systems: Origin of Negative Thermal Expansion
Cheol-Woon Kim, Seoung-Hun Kang, Young-Kyun Kwon
Using density functional theory combined with quasi-harmonic approximation, we investigate the thermal expansion behaviors of three different types (α, β, and γ) of graphyne which…
Is hexagonal boron nitride always good as a substrate for carbon nanotube-based devices?
Seoung-Hun Kang, Gunn Kim, Young-Kyun Kwon
Hexagonal boron nitride sheets have been noted especially for their enhanced properties as substrates for sp2 carbon-based nanodevices. To evaluate whether such enhanced properties…
Carbon nanotubes with atomic impurities on boron nitride sheets under applied electric fields
Seoung-Hun Kang, Gunn Kim, Young-Kyun Kwon
We perform first-principles calculations to investigate the structural and electronic properties of metal-doped (10, 0) carbon nanotubes (CNTs) on a single hexagonal boron nitride…
Adsorption properties of a nitrogen atom on the anionic golden fullerene Au
Gunn Kim, Chan-young Lim, Seoung-Hun Kang +1
Using density functional theory, we examine a nitrogen-doped anionic golden cage (NAu). For the exohedral adsorption that is more stable than the endohedral doping, the br…