Phenomenology of chiral damping in noncentrosymmetric magnets
| Autor: | Gilles Gaudin, Collins Ashu Akosa, Ioan Mihai Miron, Aurelien Manchon |
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| Přispěvatelé: | King Abdullah University of Science and Technology (KAUST), SPINtronique et TEchnologie des Composants (SPINTEC), Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019])-Institut de Recherche Interdisciplinaire de Grenoble (IRIG), Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) |
| Rok vydání: | 2016 |
| Předmět: |
Physics
Spin pumping Antisymmetric exchange Condensed Matter - Mesoscale and Nanoscale Physics Condensed matter physics FOS: Physical sciences 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Magnetization Ferromagnetism Hall effect Magnet Mesoscale and Nanoscale Physics (cond-mat.mes-hall) 0103 physical sciences Magnetic damping Condensed Matter::Strongly Correlated Electrons Tensor [PHYS.COND]Physics [physics]/Condensed Matter [cond-mat] 010306 general physics 0210 nano-technology ComputingMilieux_MISCELLANEOUS |
| Zdroj: | Physical Review B Physical Review B: Condensed Matter and Materials Physics (1998-2015) Physical Review B: Condensed Matter and Materials Physics (1998-2015), American Physical Society, 2016, 93 (21), ⟨10.1103/PhysRevB.93.214429⟩ Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2016, 93 (21), ⟨10.1103/PhysRevB.93.214429⟩ |
| ISSN: | 2469-9969 2469-9950 1098-0121 1550-235X |
| Popis: | A phenomenology of magnetic chiral damping is proposed in the context of magnetic materials lacking inversion symmetry breaking. We show that the magnetic damping tensor adopts a general form that accounts for 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 spin pumping in the presence of 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. These predictions have major importance in the context of field- and current-driven texture motion in noncentrosymmetric (ferro-, ferri-, antiferro-)magnets, not limited to metals. 5 pages, 2 figures |
| Databáze: | OpenAIRE |
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