Persistent excitation of spin waves for kπ-state skyrmions

查看全文 作　　者：RongZhi [1,2]Zhao;ChengLong [1,2]Hu;LianZe [1,2]Ji;WenChao [2]Chen;XueFeng [1,2]Zhang

机构地区：[1]Key Laboratory for Anisotropy and Texture of Materials(MOE),School of Materials Science and Engineering,Northeastern University,Shenyang 110819,China;[2]Institute of Advanced Magnetic Materials,Hangzhou Dianzi University,Hangzhou 310012,China

出　　处：《Science China(Physics,Mechanics & Astronomy)》索引2020年第63卷第6期,共8页

基　　金：supported by the Zhejiang Provincial Natural Science Foundation of China(Grant No.LR18E010001);the National Natural Science Foundation of China(Grant Nos.U1704253,and 51471045);the Fundamental Research Funds for the Central Universities(Grant No.N160208001)。 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. 关键词：magnetic bubbles spin waves micromagnetic simulation

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Persistent excitation of spin waves for kπ-state skyrmions

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