2020年10月
Current-induced linear motion of antiferromagnetically coupled skyrmion-like bubble domains stabilized without Dzyaloshinskii-Moriya interaction
JOURNAL OF PHYSICS D-APPLIED PHYSICS
- ,
- ,
- 巻
- 53
- 号
- 43
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1088/1361-6463/aba14f
- 出版者・発行元
- IOP PUBLISHING LTD
Magnetic domains are used to represent binary digits in magnetic memories. In domain-motion magnetic memories, the domain must move longitudinally along a ferromagnetic nanowire. Antiferromagnetically coupled magnetic skyrmions, which are domains meeting this requirement, can be stabilized via the Dzyaloshinskii-Moriya interaction (DMI) in an antiferromagnetically coupled bi-layered perpendicularly magnetized thin wire. We find that antiferromagnetically coupled skyrmion-like bubble domains (BDs) may be produced in such a wire without DMI. The stability and the dynamics of such domains are studied by micromagnetic simulations based on the Landau-Lifshitz-Gilbert equation. The BDs in the two layers have clockwise and anti-clockwise Bloch type domain walls, so the BD cores have anti-parallel magnetic moments and are antiferromagnetically coupled. Domain size decreases with decreasing wire width and/or increasing antiferromagnetic coupling strength of the wire. The minimum value of the BD radius is about 10 nm. When a spin-polarized current flows through the wire, the BD moves with the current.
Web of Science ® 被引用回数 : 1
Web of Science ® の 関連論文(Related Records®)ビュー
- リンク情報
- ID情報
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- DOI : 10.1088/1361-6463/aba14f
- ISSN : 0022-3727
- eISSN : 1361-6463
- ORCIDのPut Code : 76540442
- Web of Science ID : WOS:000560099900001