2017年12月
Skyrmion dynamics in a frustrated ferromagnetic film and current-induced helicity locking-unlocking transition
Nature Communications
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- 巻
- 8
- 号
- 1
- 開始ページ
- 1717
- 終了ページ
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1038/s41467-017-01785-w
- 出版者・発行元
- Springer Science and Business Media LLC
The helicity-orbital coupling is an intriguing feature of magnetic skyrmions in frustrated magnets. Here we explore the skyrmion dynamics in a frustrated magnet based on the J(1)-J(2)-J(3) classical Heisenberg model explicitly by including the dipole-dipole interaction. The skyrmion energy acquires a helicity dependence due to the dipole-dipole interaction, resulting in the current-induced translational motion with a fixed helicity. The lowest-energy states are the degenerate Bloch-type states, which can be used for building the binary memory. By increasing the driving current, the helicity locking-unlocking transition occurs, where the translational motion changes to the rotational motion. Furthermore, we demonstrate that two skyrmions can spontaneously form a bound state. The separation of the bound state forced by a driving current is also studied. In addition, we show the annihilation of a pair of skyrmion and antiskyrmion. Our results reveal the distinctive frustrated skyrmions may enable viable applications in topological magnetism.
- リンク情報
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- DOI
- https://doi.org/10.1038/s41467-017-01785-w
- Web of Science
- https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000416229300003&DestApp=WOS_CPL
- URL
- http://www.nature.com/articles/s41467-017-01785-w.pdf
- URL
- http://www.nature.com/articles/s41467-017-01785-w
- ID情報
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- DOI : 10.1038/s41467-017-01785-w
- ISSN : 2041-1723
- eISSN : 2041-1723
- ORCIDのPut Code : 38727853
- Web of Science ID : WOS:000416229300003