Emergent electromagnetic induction and adiabatic charge pumping in noncentrosymmetric weyl semimetals

Hiroaki Ishizuka, Tomoya Hayata, Masahito Ueda, Naoto Nagaosa

研究成果: Article査読

39 被引用数 (Scopus)

抄録

The photovoltaic effect due to the adiabatic quantum phase in noncentrosymmetric Weyl semimetals is studied. We particularly focus on the case in which an external ac electric field is applied. By considering a generalized Weyl Hamiltonian with nonlinear terms, we show that the photocurrent is induced by circularly, rather than linearly, polarized light. This photovoltaic current can be understood as an emergent electromagnetic induction in momentum space; the Weyl node is a magnetic monopole in momentum space, the circular motion of which induces the electric field. This result is distinct from conventional photovoltaic effects, and the estimated photocurrent is ∼10-1-101 nA, which can be detected experimentally.

本文言語English
論文番号216601
ジャーナルPhysical Review Letters
117
21
DOI
出版ステータスPublished - 2016 11 18
外部発表はい

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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