Twisted light-induced spin-spin interaction in a chiral helimagnet
Twisted light-induced spin-spin interaction in a chiral helimagnet
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手性螺旋磁体中扭曲光诱导的自旋-自旋相互作用
DOI：
10.1088/1367-2630/abf613
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发表时间：
2021
影响因子：
3.3
通讯作者：
Nobuhiko Yokoshi
中科院分区：
文献类型：
--
作者：
Yutaro Goto;Hajime Ishihara;Nobuhiko Yokoshi
我们从理论上研究了光的轨道角动量如何影响手征磁序。在这里，我们考虑一个金属手征helimagnet，这是下的共振光学涡旋光束的稳态辐射。我们提出了一种新的考虑光学涡旋和电子之间的微观相互作用的局域自旋之间的相互作用。这种涡旋诱导的相互作用以与外部磁场完全不同的方式调制手征磁序。我们的自旋调制技术可能为未来的光自旋电子学器件创造一种独特的拓扑或手性结构铺平了道路。
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.