论文标题
共线磁铁中强元的轨道角动量
Orbital Angular Momentum of Magnons in Collinear Magnets
论文作者
论文摘要
我们研究了具有非平凡交换相互作用网络的共线铁磁铁（FM）和抗铁磁（AF）系统的镁角动量。当晶格包含两个不等位点并且在避免的跨频带或极端频带的极点时，AF和FM Zig-Zag和Honeycomb Lattices的镁角动量变为非零。因此，交换相互作用的排列可能比自旋轨道耦合能和所得的自旋旋转的非结合布置在产生镁的轨道角动量方面起着更重要的作用。
We study the orbital angular momentum of magnons for collinear ferromagnet (FM) and antiferromagnetic (AF) systems with nontrivial networks of exchange interactions. The orbital angular momentum of magnons for AF and FM zig-zag and honeycomb lattices becomes nonzero when the lattice contains two inequivalent sites and is largest at the avoided-crossing points or extremum of the frequency bands. Hence, the arrangement of exchange interactions may play a more important role at producing the orbital angular momentum of magnons than the spin-orbit coupling energy and the resulting non-collinear arrangement of spins.
