KAUST DepartmentPhysical Sciences and Engineering (PSE) Division
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AbstractA 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.
CitationPhenomenology of chiral damping in noncentrosymmetric magnets 2016, 93 (21) Physical Review B
SponsorsThis 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).
PublisherAmerican Physical Society (APS)
JournalPhysical Review B