Phenomenology of chiral damping in noncentrosymmetric magnets

Collins Ashu Akosa*, Ioan Mihai Miron, Gilles Gaudin, Aurélien Manchon

*この研究の対応する著者

研究成果: Article査読

28 被引用数 (Scopus)

抄録

A phenomenology of magnetic chiral damping is proposed in the context of magnetic materials lacking inversion symmetry. We show that the magnetic damping tensor acquires a component linear in magnetization gradient in the form of Lifshitz invariants. We propose different microscopic mechanisms that can produce such a damping in ferromagnetic metals, among which local spin pumping in the presence of an anomalous Hall effect and an effective "s-d" Dzyaloshinskii-Moriya antisymmetric exchange. The implication of this chiral damping in terms of domain-wall motion is investigated in the flow and creep regimes.

本文言語English
論文番号214429
ジャーナルPhysical Review B
93
21
DOI
出版ステータスPublished - 2016 6月 21
外部発表はい

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学

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