Phenomenology of chiral damping in noncentrosymmetric magnets

Abstract

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

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Cited by in corpus (24)

• Current-induced spin-orbit torques in ferromagnetic and antiferromagnetic systems
• Universality of Dzyaloshinskii-Moriya interaction effect over domain-wall creep and flow regimes
• Disentangling factors governing Dzyaloshinskii domain wall creep in Co/Ni thin films using Pt${}_x$Ir${}_{1-x}$ seedlayers
• Quantitative agreement of Dzyaloshinskii-Moriya interactions for domain-wall motion and spin-wave propagation
• Atomic antiferromagnetic domain wall propagation beyond the relativistic limit
• Magnetic Domain-Wall Tilting due to Domain-Wall Speed Asymmetry
• Effective damping enhancement in noncollinear spin structures
• Intrinsic non-adiabatic topological torque in magnetic skyrmions and vortices
• Chiral damping, chiral gyromagnetism and current-induced torques in textured one-dimensional Rashba ferromagnets
• Recent progress in antiferromagnetic dynamics
• Comparative study of methodologies to compute the intrinsic Gilbert damping: interrelations, validity and physical consequences
• Geometrical contributions to the exchange constants: Free electrons with spin-orbit interaction
• Gilbert damping in non-collinear magnetic system
• Effect of Chiral Damping on the dynamics of chiral domain walls and skyrmions
• Roles of chiral renormalization on magnetization dynamics in chiral magnets
• Magnetic dynamics with Weyl fermions
• Theory of chiral effects in magnetic textures with spin-orbit coupling
• Dynamical and current-induced Dzyaloshinskii-Moriya interaction: Role for damping, gyromagnetism, and current-induced torques in noncollinear magnets
• Universal spin wave damping in magnetic Weyl semimetals
• Topological damping Rashba spin orbit torque in ballistic magnetic domain walls
• Algebraic decay of the nonadiabaticity arising through chiral spin transfer torque in magnetic domain walls with Rashba spin-orbit interaction
• Chirality-induced Antisymmetry in Magnetic Domain-Wall Speed
• Generalization of the Landau-Lifshitz-Gilbert equation by multi-body contributions to Gilbert damping for non-collinear magnets
• Angle-dependence and optimal design for magnetic bubblecade with maximum speed