Fast and deterministic switching of vortex core induced by out-of-plane current in notch disks.

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ID: 87581
2020
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Abstract
Magnetic vortex, as one of the most interesting magnetic solitons, has attracted great interests in 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 vortex core, through the designing of a notch structure in disks and the use of out-of-plane current geometry. We demonstrate that with such design, the multiple switching problems found in notch disk system can be avoided. Furthermore, the switching time can be reduced by more than 50% compared with disks without notch.
Reference Key
luo2020fastnanotechnology Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Luo, Yongming;Wu, Yizheng;Qian, Zhenghong;Wen, Jiahong;Li, Hai;Yu, Changqiu;Zhu, Liyao;Wang, Li;Xu, Lie;Bai, Ru;Zhou, Tiejun;
Journal Nanotechnology
Year 2020
DOI
10.1088/1361-6528/ab70f9
URL
Keywords
magnetic vortex polarity switching spin transfer torque

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