Twisted light-induced spin-spin interaction in a chiral helimagnet
Mesoscale and Nanoscale Physics
2021-05-27 v2 Other Condensed Matter
Optics
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.
Cite
@article{arxiv.2101.10131,
title = {Twisted light-induced spin-spin interaction in a chiral helimagnet},
author = {Yutaro Goto and Hajime Ishihara and Nobuhiko Yokoshi},
journal= {arXiv preprint arXiv:2101.10131},
year = {2021}
}