530 citations · 2.3k across the 32 of their papers we have counts for
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Origin of magic angles in twisted bilayer graphene: The magic ring
Wei-Chen Wang, Feng-Wu Chen, Kuan-Sen Lin +3
The unexpected discovery of superconductivity and strong electron correlation in twisted bilayer graphene (TBG), a system containing only sp electrons, is considered as one of the…
All-electrical valley filtering in graphene systems (I): A path to integrated electro-valleytronics
Feng-Wu Chen, Nin-Yuan Lue, Mei-Yin Chou +1
Probing and controlling the valley degree of freedom in graphene systems by transport measurements has been a major challenge to fully exploit the unique properties of this two-dim…
Critical role of parallel momentum in quantum well state couplings in multi-stacked nanofilms: an angle resolved photoemission study
Woojoo Lee, Chi-Ruei Pan, Hyoungdo Nam +2
We use angle resolved photoemission spectroscopy (ARPES) to investigate the coupling of electron quantum well states (QWS) in epitaxial thin Pb and Ag films. More specifically, we…
Epitaxial Growth of Two-dimensional Insulator Monolayer Honeycomb BeO
Hui Zhang, Madisen Holbrook, Fei Cheng +7
The emergence of two-dimensional (2D) materials launched a fascinating frontier of flatland electronics. Most crystalline atomic layer materials are based on layered van der Waals…
Topological Properties of Gapped Graphene Nanoribbons with Spatial Symmetries
Kuan-Sen Lin, Mei-Yin Chou
To date, almost all of the discussions on topological insulators (TIs) have focused on two- and three-dimensional systems. One-dimensional (1D) TIs manifested in real materials, in…
Quantum-spin-Hall insulator with a large gap: single-layer 1T' WSe
P. Chen, W. -W. Pai, Y. -H. Chan +6
Two-dimensional (2D) topological insulators (TIs) are promising platforms for low-dissipation spintronic devices based on the quantum spin Hall (QSH) effect, but experimental reali…
Electrical valley filtering in transition metal dichalcogenides
Tzu-Chi Hsieh, Mei-Yin Chou, Yu-Shu Wu
This work investigates the feasibility of electrical valley filtering for holes in transition metal dichalcogenides. We look specifically into the scheme that utilizes a potential…
Theory of valley-dependent transport in graphene-based lateral quantum structures
Feng-Wu Chen, Mei-Yin Chou, Yiing-Rei Chen +1
Modulation of electronic states in two-dimensional (2D) materials can be achieved by using in-plane variations of the band gap or the average potential in lateral quantum structure…
Lattice Vibrational Modes and their Frequency Shifts in Semiconductor Nanowires
Li Yang, M. Y. Chou
We have performed first-principles calculations to study the lattice vibrational modes and their Raman activities in silicon nanowires (SiNWs). Two types of characteristic vibratio…
Structural and Electronic Properties of Oxidized Graphene
Jia-An Yan, Lede Xian, M. Y. Chou
We have systematically investigated the effect of oxidation on the structural and electronic properties of graphene based on first-principles calculations. Energetically favorable…