论文标题
磁接近诱导的谐振隧穿各向异性磁路
Resonant Tunneling Anisotropic Magnetoresistance Induced by Magnetic Proximity
论文作者
论文摘要
我们揭示了二维电子气体中Rashba自旋轨道耦合与接近性诱导的磁化之间的相互作用导致奇特的传输特性和磁性磁性的大各向异性。虽然相关的隧穿各向异性磁阻（TAMR）以前已经进行了广泛的研究，但我们预测效果会产生不同的起源，这是由于谐振条件的演化而产生的，并具有磁化的平面内旋转并具有更大的幅度。隧道中的共鸣从散射状态的自旋 - 超时对称性出现。但是，系统本身通常不存在这样的对称性，仅出于某些参数值而出现。在近端三维拓扑绝缘子（TI）的拓扑表面状态下，TAMR测量很容易将它们与经常误解的琐碎的Rashba样状态区分开来。
We reveal that the interplay between Rashba spin-orbit coupling and proximity-induced magnetization in a two-dimensional electron gas leads to peculiar transport properties and large anisotropy of magnetoresistance. While the related tunneling anisotropic magnetoresistance (TAMR) has been extensively studied before, we predict an effect with a different origin arising from the evolution of a resonant condition with the in-plane rotation of magnetization and having a much larger magnitude. The resonances in the tunneling emerge from a spin-parity-time symmetry of the scattering states. However, such a symmetry is generally absent from the system itself and only appears for certain parameter values. Without resonant behavior in the topological surface states of a proximitized three-dimensional topological insulator (TI), TAMR measurements can readily distinguish them from often misinterpreted trivial Rashba-like states inherent to many TIs.
