论文标题
单层WTE $ _2 $的自旋偏振拓扑电流的电气控制
Electrical Control of Spin-polarized Topological Currents in Monolayer WTe$_2$
论文作者
论文摘要
我们证明了在低对称量子自旋霍尔绝缘子中拓扑保护边缘状态的旋转方向相干的电气操作的可能性。通过结合AB-Initio模拟，基于对称性的建模以及对旋转霍尔电导率的大规模计算，可以表明，小型电场可以有效地改变单层1T'-WTE2中边缘电流的自旋纹理，而无需降低其拓扑特征，而无需降低90度旋转旋转。这些发现表明了一种新型可控制的基于栅极的基于旋转的装置，可以拓扑保护疾病，并与拓扑旋转学的发展相关。
We evidence the possibility for coherent electrical manipulation of the spin orientation of topologically protected edge states in a low-symmetry quantum spin Hall insulator. By using a combination of ab-initio simulations, symmetry-based modeling, and large-scale calculations of the spin Hall conductivity, it is shown that small electric fields can efficiently vary the spin textures of edge currents in monolayer 1T'-WTe2 by up to a 90-degree spin rotation, without jeopardizing their topological character. These findings suggest a new kind of gate-controllable spin-based device, topologically protected against disorder and of relevance for the development of topological spintronics.
