Generation of magnetic skyrmion bubbles by inhomogeneous spin Hall currents

被引：42

作者：

Heinonen, Olle ^{[1
,2
]}

Jiang, Wanjun ^{[1
]}

Somaily, Hamoud ^{[1
,3
]}

te Velthuis, Suzanne G. E. ^{[1
]}

Hoffmann, Axel ^{[1
]}

机构：

[1] Argonne Natl Lab, Div Mat Sci, Lemont, IL 60439 USA

[2] Northwestern Argonne Inst Sci & Engn, Evanston, IL 60208 USA

[3] No Illinois Univ, Dept Phys, De Kalb, IL 60115 USA

来源：

PHYSICAL REVIEW B | 2016年 / 93卷 / 09期

关键词：

D O I：

10.1103/PhysRevB.93.094407

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Recent experiments have shown that magnetic skyrmion bubbles can be generated and injected at room temperature in thin films [W. Jiang et al., Science 349, 283 (2015)]. Here, we demonstrate, using micromagnetic modeling, that such skyrmions can be generated by an inhomogeneous spin Hall torque in the presence of Dzyaloshinskii-Moriya interactions (DMIs). In the experimental Ta/Co20Fe60B20 thin films, the DMI is rather small; nevertheless, the skyrmion bubbles are stable, or at least metastable on observational time scales.

引用

页数：6

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