论文标题
拓扑厅效应诱导Skyrmion-Antiskyrmion耦合在不均匀赛道中
Topological Hall effect induced Skyrmion-Antiskyrmion coupling in inhomogeneous racetrack
论文作者
论文摘要
在本文中，我们研究了由具有不同特性的三种材料组成的磁性跑道。确实，该磁系统由两个薄界面相连的两个不同区域（赛车）组成：第一个区域（称为$ 1 $）具有各向同性的平面磁性手性，而支持Skyrmion（$ s $）兴奋，第二个（$ 3 $）具有Anisotropic Mastropic Hiropitic Mashiritality和Anisotropic Hiropity Mashiratity and Suctions Antiskyrsions（$）Antiskyrmions（$）。该界面将是位于赛马场中央部分的第三区域（$ 2 $，连接行业$ 1 $和$ 3 $），是Heisenberg Ferromagnetic材料。拓扑结构$ s $和$ a $通过施加自旋偏振电流而进行。在某些条件下，我们表明，在其各自部门中创建的Skyrmion和Antiskyrmion同时被促使界面（由于Magnus力量）显然成为一个独特的对象（Skyrmion-Antiskyrmion对或$ SAP $）。在用$ 2 $胶合使用后，Skyrmion和Antiskyrmion沿应用电流的方向一起移动（作为$ SAP $）。还表明，这样的工程赛道可以支持几个$ SAP $结构的序列，形成电流。
In this paper we investigate a magnetic racetrack consisting of a junction of three materials with different properties. Indeed, this magnetic system is composed by two distinct regions (racetracks) connected by a thin interface: the first region (termed sector $1$) has isotropic in-plane magnetic chirality and supports skyrmion ($S$) excitations while the second (sector $3$) has anisotropic chirality and consequently supports antiskyrmions ($A$). The interface, which would be a third region (sector $2$, connecting sectors $1$ and $3$) located in the central part of the racetrack, is an easy-axis Heisenberg ferromagnetic material. The topological structures $S$ and $A$ are put in motion by applying a spin-polarized current. Under certain conditions, we show that the skyrmion and the antiskyrmion created in their respective sectors are simultaneously impelled to the interface (due to the Magnus force) to apparently become a unique object (a skyrmion-antiskyrmion pair or $SAP$). After glued by sector $2$, the skyrmion and the antiskyrmion move together (as a $SAP$) along the direction of the applied current. It is also shown that such an engineered racetrack can support a sequence of several $SAP$ structures in motion, forming a current.
