Laser-Driven Multiferroics and Ultrafast Spin Current Generation
Laser-Driven Multiferroics and Ultrafast Spin Current Generation
We propose an ultrafast way to generate spin chirality and spin current in a class of multiferroic magnets using a terahertz circularly polarized laser. Using the Floquet formalism for periodically driven systems, we show that it is possible to dynamically control the Dzyaloshinskii-Moriya interaction in materials with magnetoelectric coupling. This …