Blowing magnetic skyrmion bubbles

被引：1248

作者：

Jiang, Wanjun ^{[1
]}

Upadhyaya, Pramey ^{[2
]}

Zhang, Wei ^{[1
]}

Yu, Guoqiang ^{[2
]}

Jungfleisch, M. Benjamin ^{[1
]}

Fradin, Frank Y. ^{[1
]}

Pearson, John E. ^{[1
]}

Tserkovnyak, Yaroslav ^{[3
]}

Wang, Kang L. ^{[2
]}

Heinonen, Olle ^{[1
,4
,5
,6
]}

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

Hoffmann, Axel ^{[1
]}

机构：

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

[2] Univ Calif Los Angeles, Dept Elect Engn, Device Res Lab, Los Angeles, CA 90095 USA

[3] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA

[4] Northwestern Univ, Dept Phys & Astron, Evanston, IL 60208 USA

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

[6] Univ Chicago, Computat Inst, Chicago, IL 60637 USA

来源：

SCIENCE | 2015年 / 349卷 / 6245期

关键词：

DOMAIN-WALLS; SPIN-TORQUE; DYNAMICS; LATTICE; DRIVEN; FILMS;

D O I：

10.1126/science.aaa1442

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The formation of soap bubbles from thin films is accompanied by topological transitions. Here we show how a magnetic topological structure, a skyrmion bubble, can be generated in a solid-state system in a similar manner. Using an inhomogeneous in-plane current in a system with broken inversion symmetry, we experimentally "blow" magnetic skyrmion bubbles from a geometrical constriction. The presence of a spatially divergent spin-orbit torque gives rise to instabilities of the magnetic domain structures that are reminiscent of Rayleigh-Plateau instabilities in fluid flows. We determine a phase diagram for skyrmion formation and reveal the efficient manipulation of these dynamically created skyrmions, including depinning and motion. The demonstrated current-driven transformation from stripe domains to magnetic skyrmion bubbles could lead to progress in skyrmion-based spintronics.

引用

页码：283 / 286

页数：4

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