Symmetry-protected difference between spin Hall and anomalous Hall effects of a periodically driven multiorbital metal

Abstract

Non-equilibrium states can be induced in a given system using periodic driving and the underlying physics understood using Floquet theory. Here, the authors model a periodically driven t2g-orbital metal and demonstrate how the spin Hall and anomalous Hall effects are realized and can be distinguished by their response to circularly polarized light with different helicities.