324 citations · 553 across the 20 of their papers we have counts for
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cond-mat.mtrl-sci2024★ 1 cited
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…
cond-mat.mtrl-sci2024★ 26 cited
Universal relation between energy gap and dielectric constant
Yugo Onishi, Liang Fu
We establish a universal relation between the energy gap and the static dielectric constant for all insulating states. This relation yields an upper bound on the energy gap, which…
cond-mat.mtrl-sci2022★ 2 cited
Theory of shift heat current and its application to electron-phonon coupled systems
Yugo Onishi, Takahiro Morimoto, Naoto Nagaosa
We propose a heat current analog of the shift current, "shift heat current". We study nonlinear heat current responses to an applied ac electric field by a diagrammatic method and…