论文标题
磁杂质的环形散射和非转化转运
Toroidal Scattering and Nonreciprocal Transport by Magnetic Impurities
论文作者
论文摘要
我们提出了由磁性杂质引起的电场中金属的二阶响应，这些杂质在局部破坏了反转对称性。在存在自旋轨道偶联的情况下，带有环形力矩的杂质散射传导电子，导致非偏射反应。当将磁性杂质从倒置中心（例如间隙位点和二维系统的表面）放置时，这种机制无处不在。
We propose the second-order response of metals in an electric field induced by magnetic impurities which locally break inversion symmetry. The impurities with toroidal moments scatter conduction electrons in the presence of the spin-orbit coupling, leading to nonreciprocal response. This mechanism is ubiquitous when a magnetic impurity is placed off an inversion center such as an interstitial site and a surface of a two-dimensional system.
