论文标题
第一原告dzyaloshinskii-moriya在非结算框架中的互动
First-principles Dzyaloshinskii-Moriya interaction in a non-collinear framework
论文作者
论文摘要
我们得出了dzyaloshinskii-moriya（DM）相互作用的表达，其中可以独立计算DM矢量的所有三个组件，以进行一般的非类别磁性构型。形式主义是在真实空间 - 线性松饼键 - 原子球近似（RS-LMTO-ASA）方法中实现的。我们在AU（111）（111）和AU（111）和Au（111）表面上选择了CR三角形三聚体作为数值示例。结果表明，对于共线和非共线状态，DM相互作用（模块和方向）截然不同。基于系统中流动的自旋和电荷电流之间的关系，以及它们与三角形三角体的非固定磁构型的耦合，我们证明即使没有自旋轨道耦合，DM相互作用也很重要。这表明这是从非类别磁性结构中散发出来的，即使在自旋轨道耦合的情况下，也可以诱导明显的自旋和电荷电流。
We have derived an expression of the Dzyaloshinskii-Moriya (DM) interaction, where all the three components of the DM vector can be calculated independently, for a general, non-collinear magnetic configuration. The formalism is implemented in a real space - linear muffin-tin orbital - atomic sphere approximation (RS-LMTO-ASA) method. We have chosen the Cr triangular trimer on Au(111) and Mn triangular trimers on Ag(111) and Au(111) surfaces as numerical examples. The results show that the DM interaction (module and direction) is drastically different for collinear and non-collinear states. Based on the relation between the spin and charge currents flowing in the system and their coupling to the non-collinear magnetic configuration of the triangular trimer, we demonstrate that the DM interaction can be significant, even in the absence of spin-orbit coupling. This is shown to emanate from the non-collinear magnetic structure, that can induce significant spin and charge currents even with spin-orbit coupling is ignored.
