Статья

Blowing magnetic skyrmion bubbles

Wanjun JiangMaterials Science Division, Argonne National Laboratory, Lemont, IL 60439, USAPramey UpadhyayaDevice Research Laboratory, Department of Electrical Engineering, University of California, Los Angeles, CA 90095, USAWei ZhangMaterials Science Division, Argonne National Laboratory, Lemont, IL 60439, USAGuoqiang YuDevice Research Laboratory, Department of Electrical Engineering, University of California, Los Angeles, CA 90095, USAM. Benjamin JungfleischMaterials Science Division, Argonne National Laboratory, Lemont, IL 60439, USAFrank Y. FradinMaterials Science Division, Argonne National Laboratory, Lemont, IL 60439, USAJohn E. PearsonMaterials Science Division, Argonne National Laboratory, Lemont, IL 60439, USAYaroslav TserkovnyakDepartment of Physics and Astronomy, University of California, Los Angeles, CA 90095, USAKang L. WangDevice Research Laboratory, Department of Electrical Engineering, University of California, Los Angeles, CA 90095, USAOlle HeinonenComputation Institute, University of Chicago, Chicago, IL 60637, USASuzanne G. E. te VelthuisMaterials Science Division, Argonne National Laboratory, Lemont, IL 60439, USAAxel HoffmannMaterials Science Division, Argonne National Laboratory, Lemont, IL 60439, USA

2015en

ABI

Аннотация

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.

Перевод пока недоступен

Идентификаторы

DOI: 10.1126/science.aaa1442

Цитирования и источники

Цитирований: 2Использованных источников: 0

Показатели — AkademScholar