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arXiv · 1601.00379

Photovoltaic Chiral Magnetic Effect

Katsuhisa Taguchi·Tatsushi Imaeda·Masatoshi Sato·Yukio Tanaka
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Abstract

We theoretically predict a generation of a current in Weyl semimetals by applying circularly polarized light. The electric field of the light can drive an effective magnetic field of order of ten Tesla. For lower frequency light, a non-equilibrium spin distribution is formed near the Fermi surface. Due to the spin-momentum locking, a giant electric current proportional to the effective magnetic field is induced. On the other hand, higher frequency light realizes a quasi-static Floquet state with no induced electric current. We discuss relevant materials and estimate order of magnitude of the induced current.

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Katsuhisa Taguchi, Tatsushi Imaeda, Masatoshi Sato, Yukio Tanaka. 2016-01-04. Photovoltaic Chiral Magnetic Effect. https://doi.org/10.1103/physrevb.93.201202

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