論文

査読有り 筆頭著者 国際共著 国際誌
2017年12月

Skyrmion dynamics in a frustrated ferromagnetic film and current-induced helicity locking-unlocking transition

Nature Communications
  • Xichao Zhang
  • ,
  • Jing Xia
  • ,
  • Yan Zhou
  • ,
  • Xiaoxi Liu
  • ,
  • Han Zhang
  • ,
  • Motohiko Ezawa

8
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
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
  • DOI : 10.1038/s41467-017-01785-w
  • ISSN : 2041-1723
  • eISSN : 2041-1723
  • ORCIDのPut Code : 38727853
  • Web of Science ID : WOS:000416229300003

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