论文标题
在三维拓扑绝缘子的表面上，超流动涡流和Majora零模式是由Zeeman场诱导的
Supercurrent vortices and Majorana zero modes induced by an inplane Zeeman field on the surface of a three-dimensional topological insulator
论文作者
论文摘要
非均匀的平面齐曼场可以在超导二维系统和薄膜中诱导自旋轨道耦合电子的自发超电流。在这项工作中，表明可以在铁磁绝缘子的长均匀磁性条的末端产生当前的涡旋，该条形沉积在三维拓扑绝缘子的表面上。假定其表面上的S波超导性具有内在的起源，或者是由接近效应诱导的。结果表明，具有奇数涡度的涡旋可以定位Majorana零模式。后者也可以通过条纹内部足够狭窄的域壁引起，这为通过移动墙壁而操纵这些模式的方式开辟了道路。结果表明，可以通过改变条带的磁化和宽度来调整涡度。已经分析了相对于Berezinsky-Kosterlitz-无尽的跃迁的带磁化的稳定性。
A nonuniform in-plane Zeeman field can induce spontaneous supercurrents of spin-orbit coupled electrons in superconducting two-dimensional systems and thin films. In this work it is shown that current vortices can be created at the ends of a long homogeneously magnetized strip of a ferromagnetic insulator, which is deposited on the surface of a three-dimensional topological insulator. The s-wave superconductivity on its surface is assumed to have an intrinsic origin, or to be induced by the proximity effect. It is shown that vortices with the odd vorticity can localize Majorana zero modes.The latter may also be induced by sufficiently narrow domain walls inside the strip, that opens a way for manipulating these modes by moving the walls. It is shown that the vorticity can be tuned by varying the magnetization and width of the strip. A stability of the strip magnetization with respect to the Berezinsky-Kosterlitz-Thouless transition has been analyzed.
