Photovoltaic Chiral Magnetic Effect
  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. 
Katsuhisa Taguchi, Tatsushi Imaeda, Masatoshi Sato, and Yukio Tanaka
cond-mat.mes-hall