77 citations · 80 across the 5 of their papers we have counts for
5 papers
Singular high-harmonic transport above a quantum threshold
Yugo Onishi, Su-Yang Xu, Liang Fu
We show that Landau-Zener tunneling in a small-gap insulator produces a singular DC current--voltage relation, and correspondingly, strong high-harmonic generation in AC transport.…
Extending Topological Bound on Quantum Weight Beyond Symmetry-Protected Topological Phases
Yi-Chun Hung, Yugo Onishi, Hsin Lin +2
The quantum metric encodes the geometric structure of Bloch wave functions and governs a wide range of physical responses. Its Brillouin-zone integral, the quantum weight, appears…
Probing quantum geometry through optical conductivity and magnetic circular dichroism
Barun Ghosh, Yugo Onishi, Su-Yang Xu +3
Probing ground-state quantum geometry and topology through optical response is not only of fundamental interest, but it can also offer several practical advantages. Here, using fir…
Novel Spin-texture on the warped Dirac-cone surface states in topological insulators
Susmita Basak, Hsin Lin, L. A. Wray +4
We have investigated the nature of surface states in the Bi2Te3 family of three-dimensional topological insulators using first-principles calculations as well as model Hamiltonians…
Single-Dirac-Cone topological surface states on pseudo-IV-VI-semimetal/semiconductors: Thallium-based III-V-VI2 Ternary Chalcogenides
H. Lin, R. S. Markiewicz, L. A. Wray +3
We have investigated several classes of strong spin-orbit chalcogenides related to the (Pb,Sn)Te series studied in connection with the Dirac fermion physics in the 1980s. Our first…