Phenomenology of chiral damping in noncentrosymmetric magnets

Collins Ashu Akosa, Ioan Mihai Miron, Gilles Gaudin, Aurelien Manchon

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33 Scopus citations


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 (US)
JournalPhysical Review B
Issue number21
StatePublished - Jun 21 2016

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledged KAUST grant number(s): OSR-CRG URF/1/1693-01
Acknowledgements: This publication is based upon work supported by the King
Abdullah University of Science and Technology (KAUST)
through Award No. OSR-CRG URF/1/1693-01 from the Office
of Sponsored Research (OSR).


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