Persistent excitation of spin waves for kπ-state skyrmions

被引：0

作者：

RongZhi Zhao ^{[1
,2
]}

ChengLong Hu ^{[1
,2
]}

LianZe Ji ^{[1
,2
]}

WenChao Chen ^{[2
]}

XueFeng Zhang ^{[1
,2
]}

机构：

[1] Key Laboratory for Anisotropy and Texture of Materials (MOE), School of Materials Science and Engineering,Northeastern University

[2] Institute of Advanced Magnetic Materials, Hangzhou Dianzi University

来源：

ScienceChina(Physics,Mechanics&Astronomy) | 2020年 / 06期

基金：

中国国家自然科学基金; 中央高校基本科研业务费专项资金资助;

关键词：

magnetic bubbles; spin waves; micromagnetic simulation;

D O I：

暂无

中图分类号：

P14 [天体物理学];

学科分类号：

070401 ;

摘要：

In this study, we investigated the micromagnetic dynamics of kπ-state skyrmions in a magnetic nanodot under a circular spinpolarized current and found an excited spin wave that can propagate persistently along the direction of the radius toward the center. This dynamic process is associated with two energetically favorable states in an oscillating period of spin waves. In this case, the spin-polarized current plays a role similar to effective perpendicular magnetic anisotropy and decreases the minimum energy in the magnetic system. Our findings provide insight into understanding the dynamic behaviors of topological magnetic textures.

引用

页码：93 / 100

页数：8

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