论文标题
旋转轨道耦合金属中的光学厅响应：磁簇单子，四极和环形序列的比较研究
Optical Hall response in spin-orbit coupled metals: Comparative study of magnetic cluster monopole, quadrupole, and toroidal orders
论文作者
论文摘要
理论上研究了光学霍尔的响应，用于与簇型磁多物的铁核阶的自旋轨道耦合金属。我们发现不同的磁多物在光学厅电导率中产生不同的光谱。在单极和四极顺序的情况下，光霍尔的响应主要出现在高能量和低能区域中，这分别与电子相关和动能的能量尺度相对应，而响应则分散并且在圆环顺序的情况下相当弱。通过将光谱分解为不同的带间贡献，我们揭示了反对称自旋轨道耦合与基础多物之间的相互作用所产生的选择规则。我们的结果表明，光霍尔测量值可用于检测和区分群集型磁多极阶。
The optical Hall response is theoretically studied for spin-orbit coupled metals with ferroic orders of cluster-type magnetic multipoles. We find that different magnetic multipoles give rise to distinct spectra in the optical Hall conductivity. In the cases of monopole and quadrupole orders, the optical Hall response appears predominantly in high- and low-energy regions, which correspond to the energy scales of electron correlation and kinetic energy, respectively, while the response is dispersed and rather weak in the case of toroidal order. By decomposing the spectra into different interband contributions, we reveal selection rules stemming from the interplay between the antisymmetric spin-orbit coupling and the underlying multipoles. Our results suggest that the optical Hall measurement is useful to detect and distinguish the cluster-type magnetic multipole orders.
