Néel- and Bloch-Type Magnetic Vortices in Rashba Metals

• Hayami, Satoru

• Motome, Yukitoshi

書誌事項

タイトル別名

• Neel- and Bloch-Type Magnetic Vortices in Rashba Metals

抄録

We theoretically study noncoplanar spin textures in polar magnetic conductors. Starting from the Kondo lattice model with the Rashba spin-orbit coupling, we derive an effective spin model with generalized Ruderman-Kittel-Kasuya-Yosida interactions including the anisotropic and antisymmetric exchange interactions. By performing simulated annealing for the effective model, we find that a vortex crystal of Neel type is stabilized even in the absence of a magnetic field. Moreover, we demonstrate that a Bloch-type vortex crystal, which is usually associated with the Dresselhaus spin-orbit coupling, can also be realized in our Rashba-based model. A magnetic field turns the vortex crystals into Neel- and Bloch-type Skyrmion-like crystals. Our results underscore that the interplay between the spin-orbit coupling and itinerant magnetism brings fertile possibilities of noncoplanar magnetic orderings.

収録刊行物

• Physical Review Letters

  Physical Review Letters 121 (13), 137202-, 2018-09-25

  American Physical Society (APS)

キーワード

• Magnetic vortices
• RKKY interaction
• Rashba coupling
• Skyrmions
• Kondo lattice model

詳細情報

• CRID: 1050845763984835584
• NII論文ID: 120006539254
• DOI: 10.1103/physrevlett.121.137202
• ISSN: 10797114
• ISSN: 00319007
• HANDLE: 2115/72032
• Web Site: https://link.aps.org/article/10.1103/PhysRevLett.121.137202
• Web Site: http://harvest.aps.org/v2/journals/articles/10.1103/PhysRevLett.121.137202/fulltext
• 本文言語コード: en
• 資料種別: journal article
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