论文标题
在光学驱动的SNTE（001）表面上的非共线扭曲rkky相互作用
Noncollinear twisted RKKY interaction on the optically driven SnTe(001) surface
论文作者
论文摘要
拓扑晶体绝缘子SNTE（001）表面上的非平凡自旋纹理具有异国情调的科学重要性和旋转的应用。在这里，我们研究了弱Floquet光学驾驶对ruderman-kiter-kasuya-yosida（rkky）（rkky）在掺杂SNTE（001）表面上之间的相互作用的影响。由于奇特的自旋轨道杂交，我们发现了一个非共线扭曲的rkky相互作用，其中包括XYZ-HEISENBERG，对称面积和不对称的Dzyaloshinskii-Moriya（DM）项。我们看到，$ z $（$ x $）的贡献 - XYZ-HEISENBERG（DM）的组件对于大多数参数而言是主导的。在大多数情况下，包括负责有趣的自旋纹理的DM术语的交互作用需要掺杂。我们建议通过对频带结构的光学控制来修改原位相互作用，从而改变相互作用。该控制方案的一个显着方面是破坏电子孔对称性，这源于DM相互作用。
The nontrivial spin texture on the (001) surface of topological crystalline insulator SnTe hosts exotic scientific importance and spintronic applications. Here, we study the effects of weak Floquet optical driving on the Ruderman-Kittel-Kasuya-Yosida (RKKY) interaction between two magnetic impurities on a doped SnTe(001) surface. Due to peculiar spin-orbit hybridization, we find a noncollinear twisted RKKY interaction comprising XYZ-Heisenberg, symmetric in-plane, and asymmetric Dzyaloshinskii-Moriya (DM) terms. We see that contributions from the $z$ ($x$)-component of the XYZ-Heisenberg (DM) interaction are dominant for most parameters. The interactions, including DM terms that are responsible for interesting spin textures, require doping in most cases. We propose to modify the interactions in situ via optical control of band structure, and thereby doping. A notable aspect of this control protocol is breaking of electron-hole symmetry, which stems from the DM interaction.
