153 citations · 296 across the 7 of their papers we have counts for
7 papers
Unexpected stabilization of a single- charge density wave in pristine 1T-TiSe
Kimoon Higashihira Han, Dongju Hwang, Dongsin Kim +16
Over the past decade, studies revisiting the classical charge-density-wave system 1T-TiSe, long understood to host the triple- order with equivalent subcomponen…
Anisotropic Pseudospin Tunneling in Two-Dimensional Black Phosphorus Junctions
Young Woo Choi, Hyoung Joon Choi
We investigate the role of pseudospin structure of few-layer black phosphorus (BP) in interband tunneling properties in lateral BP junctions. We find that interband tunneling is cr…
Dichotomy of Electron-Phonon Coupling in Graphene Moiré Flat Bands
Young Woo Choi, Hyoung Joon Choi
Graphene moire superlattices are outstanding platforms to study correlated electron physics and superconductivity with exceptional tunability. However, robust superconductivity has…
Intrinsic Band Gap and Electrically Tunable Flat Bands in Twisted Double Bilayer Graphene
Young Woo Choi, Hyoung Joon Choi
We present atomistic calculations on structural and electronic properties of twisted double bilayer graphene (TDBG) consisting of two sets of rotationally misaligned Bernal-stacked…
Role of electric fields on enhanced electron correlation in surface-doped FeSe
Young Woo Choi, Hyoung Joon Choi
Electron-doped high-Tc FeSe reportedly has a strong electron correlation that is enhanced with doping. It has been noticed that significant electric fields exist inevitably between…
Strong electron-phonon coupling, electron-hole asymmetry, and nonadiabaticity in magic-angle twisted bilayer graphene
Young Woo Choi, Hyoung Joon Choi
We report strong electron-phonon coupling in magic-angle twisted bilayer graphene (MA-TBG) obtained from atomistic description of the system including more than 10000 atoms in the…
Ultrafast zero balance of the oscillator-strength sum rule in graphene
Jaeseok Kim, Seong Chu Lim, Seung Jin Chae +5
Oscillator-strength sum rule in light-induced transitions is one general form of quantum-mechanical identities. Although this sum rule is well established in equilibrium photo-phys…