Magnetic vortex gyration affected by Dzyaloshinskii-Moriya interaction

被引:14
|
作者
Luo, Y. M. [1 ,2 ]
Zhou, C. [1 ,2 ]
Won, C. [3 ]
Wu, Y. Z. [1 ,2 ]
机构
[1] Fudan Univ, Dept Phys, State Key Lab Surface Phys, Shanghai 200433, Peoples R China
[2] Fudan Univ, Collaborat Innovat Ctr Adv Microstruct, Shanghai 200433, Peoples R China
[3] Kyung Hee Univ, Dept Phys, Seoul 130701, South Korea
基金
新加坡国家研究基金会; 美国国家科学基金会;
关键词
DOMAIN-WALLS; DYNAMICS; EXCITATION; PERMALLOY; SKYRMIONS;
D O I
10.1063/1.4919423
中图分类号
O59 [应用物理学];
学科分类号
摘要
The effect of the Dzyaloshinskii-Moriya interaction (DMI) on magnetic vortex gyration is investigated systematically through micromagnetic simulations. Our results show that the DMI can lift the degeneracy of vortex gyration eigenfrequencies for vortices with left-and right-handedness. For vortex gyration excited by an in-plane AC resonant field, the DMI can strongly influence the gyration amplitude and the critical field for core switching, depending on the sign of the DMI and the vortex handedness. The DMI-induced edge state has a strong effect on the vortex core gyration as the core approaches the disk edge. (C) 2015 AIP Publishing LLC.
引用
收藏
页数:6
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