Phenomenology of chiral damping in noncentrosymmetric magnets

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

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

30 Citations (Scopus)

Abstract

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.

Original languageEnglish
Article number214429
JournalPhysical Review B
Volume93
Issue number21
DOIs
Publication statusPublished - 2016 Jun 21
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Fingerprint

Dive into the research topics of 'Phenomenology of chiral damping in noncentrosymmetric magnets'. Together they form a unique fingerprint.

Cite this