764 citations · 1.2k across the 15 of their papers we have counts for
15 papers
Ultrafast Current Switching from Quantum Geometry in Semimetals
Youngjae Kim, Sejoong Kim, Jun-Won Rhim
Technological progress towards next-generation electronics critically relies on achieving faster switching with reduced energy consumption. Because device operation speeds are fund…
High Photovoltaic Efficiency in Bulk-Stacked One-Dimensional GeSe van der Waals Crystal
Seoung-Hun Kang, Youngjae Kim, Bo Gyu Jang +1
Germanium diselenide (GeSe) has recently attracted substantial interest as a rare example of one-dimensional (1D) van der Waals material. Here, we investigate the photovoltai…
Topological Protection by Local Support Symmetry and Destructive Interference
Jun-Won Rhim, Jaeuk Seo, Seongjun Mo +3
Conventionally, symmetry-protected topological phases and band crossings are protected by global symmetries acting on the entire system. Here, we show that symmetries preserved onl…
Construction of optimized tight-binding models using \textit{ab initio} Hamiltonian: Application to monolayer -transition metal dichalcogenides
Sejoong Kim
We present optimized tight-binding models with atomic orbitals to improve \textit{ab initio} tight-binding models constructed by truncating full density functional theory (DFT) Ham…
Magnetic Ordering, Anomalous Lifshitz Transition and Topological Grain Boundaries in Two-Dimensional Biphenylene Network
Young-Woo Son, Hosub Jin, Sejoong Kim
We study electronic properties of a new planar carbon crystal formed through networking biphenylene molecules. Novel electronic features among carbon materials such as zone-center…
Dichotomy of saddle points in energy bands of a monolayer NbSe
Sejoong Kim, Young-Woo Son
We theoretically show that two distinctive spin textures manifest themselves around saddle points of energy bands in a monolayer NbSe under external gate potentials. While the…