Fast and deterministic switching of a vortex core induced by an out-of-plane current in notch disks
Fast and deterministic switching of a vortex core induced by an out-of-plane current in notch disks
复制标题
由凹口盘中的面外电流引起的涡核的快速且确定性的切换
DOI：
10.1088/1361-6528/ab70f9
复制
发表时间：
2020
期刊：
影响因子：
3.5
通讯作者：
Zhou T. J.
中科院分区：
文献类型：
--
作者：
Luo Y. M.;Wu Y. Z.;Qian Z. H.;Wen J. H.;Li H.;Yu C. Q.;Zhu L. Y.;Wang L.;Xu L.;Bai R.;Zhou T. J.
磁涡旋作为最有趣的磁孤子之一，在过去的二十年中引起了人们的极大兴趣。一种快速可靠的方法来切换涡旋极性和手性是各种应用的关键问题之一。基于微磁模拟，我们在这里通过设计盘中的凹口结构和使用面外电流几何结构，报告了涡旋核心的快速、低能量成本和确定性切换。我们证明，通过这样的设计，可以避免凹口磁盘系统中出现的多重切换问题。此外，与无槽口磁盘相比，切换时间可减少50%以上。
The magnetic vortex, as one of the most interesting magnetic solitons, has attracted great interest over the past two decades. A fast and reliable method to switch vortex polarity and chirality is one of the key issues for various applications. Based on micromagnetic simulation, here we report a fast, low energy cost and deterministic switching of a vortex core, by the designing of a notch structure in disks and the use of out-of-plane current geometry. We demonstrate that with such a design, the multiple switching problems found in notch disk systems can be avoided. Furthermore, the switching time can be reduced by more than 50% compared with disks without notches.