Novel Light-Induced States in Triangular Metallic Magnet

Abstract

Novel nonequilibrium states of magnet induced by light attract considerable attention both in nature of physics and apply. In this work, we systematically explore the electronic and magnetic states of a double-exchange model on a triangular lattice under the irradiation of circularly polarized continuous wave field, by means of molecular dynamics calculation. Several exotic nonequilibrium magnetic states are discovered, including a vortex state, long-range magnetic orders at the $\Gamma$ and $\textbf{K}/2$, as well as quasi(dynamical)-long-range magnetic order at the $\textbf{K}$ and $\textbf{M}$, respectively. Correspondingly, the evolution of electron bands and fillings are also uncovered. These results offer a promising candidate approach for the optical control of exotic magnetic and electronic states.