Twisted light-induced spin-spin interaction in a chiral helimagnet
arXiv:2101.10131 · doi:10.1088/1367-2630/abf613
Abstract
We theoretically investigate how the orbital angular momentum of light can affect a chiral magnetic order. Here, we consider a metallic chiral helimagnet, which is under stationary radiation of a resonant optical vortex beam. We propose a novel interaction between local spins considering microscopic interactions between an optical vortex and electrons. This vortex-induced interaction modulates the chiral magnetic order in an entirely different way than an external magnetic field does. Our spin modulation technique may pave a route to create a unique topological or chiral structure for future opto-spintronics devices.
References in corpus (6)
- Quantum States and Phases in Driven Open Quantum Systems with Cold Atoms
- Optical alignment and spinning of laser-trapped microscopic particles
- Keldysh approach for non-equilibrium phase transitions in quantum optics: beyond the Dicke model in optical cavities
- Correlated electron systems periodically driven out of equilibrium: Floquet + DMFT formalism
- General description for nonequilibrium steady states in periodically driven dissipative quantum systems
- Stochastic thermodynamics of rapidly driven systems