Roles of chiral renormalization on magnetization dynamics in chiral magnets
arXiv:1803.00017 · doi:10.1103/PhysRevB.97.100402
Abstract
In metallic ferromagnets, the interaction between local magnetic moments and conduction electrons renormalizes parameters of the Landau-Lifshitz-Gilbert equation such as the gyromagnetic ratio and the Gilbert damping, and makes them dependent on the magnetic configurations. Although the effects of the renormalization for nonchiral ferromagnets are usually minor and hardly detectable, we show that the renormalization does play a crucial role for chiral magnets. Here the renormalization is chiral and as such we predict experimentally identifiable effects on the phenomenology of magnetization dynamics. In particular, our theory for the self-consistent magnetization dynamics of chiral magnets allows for a concise interpretation of domain wall creep motion. We also argue that the conventional creep theory of the domain wall motion, which assumes Markovian dynamics, needs critical reexamination since the gyromagnetic ratio makes the motion non-Markovian. The non-Markovian nature of the domain wall dynamics is experimentally checkable by the chirality of the renormalization.
arXiv comment8 pages, 3 figures, 1 table
References in corpus (39)
- Skyrmion Lattice in a Chiral Magnet
- Spin torque switching with the giant spin Hall effect of tantalum
- Spin Transfer Torques
- Current-driven dynamics of chiral ferromagnetic domain walls
- Spin Transfer Torque Generated by the Topological Insulator Bi_2Se_3
- Roles of non-equilibrium conduction electrons on magnetization dynamics of ferromagnets
- Dynamics of Dzyaloshinskii domain walls in ultrathin magnetic films
- Theory of Current-Driven Domain Wall Motion: A Poorman's Approach
- Anatomy of Dzyaloshinskii-Moriya Interaction at Co/Pt Interfaces
- Creep and depinning in disordered media
- Asymmetric Magnetic Domain-Wall Motion by the Dzyaloshinskii-Moriya Interaction
- Thermal Spin-Transfer Torques in Magnetoelectronic Devices
- Diffusive spin dynamics in ferromagnetic thin films with a Rashba interaction
- Magnetization dynamics induced by in-plane currents in ultrathin magnetic nanostructures
- Chirality from interfacial spin-orbit coupling effects in magnetic bilayers
- Quantum Kinetic Theory of Current-Induced Torques in Rashba Ferromagnets
- Electron Transport Driven by Nonequilibrium Magnetic Textures
- Asymmetric magnetic bubble expansion under in-plane field in Pt/Co/Pt: effect of interface engineering
- Effects of mechanical rotation on spin currents
- Chiral damping of magnetic domain walls
- Prediction of Giant Spin Motive Force due to Rashba Spin-Orbit Coupling
- Current-induced torques in textured Rashba ferromagnets
- Pinning dependent field driven domain wall dynamics and thermal scaling in an ultrathin Pt/Co/Pt magnetic film
- Current-induced motion of a transverse magnetic domain wall in the presence of spin Hall effect
- Relativistic theory of magnetic inertia in ultrafast spin dynamics
- Simultaneous control of the Dzyaloshinskii-Moriya interaction and magnetic anisotropy in nanomagnetic trilayers
- Spin motive force induced by Rashba interaction in the strong sd coupling regime
- Phenomenology of chiral damping in noncentrosymmetric magnets
- Hydrodynamic theory of coupled current and magnetization dynamics in spin-textured ferromagnets
- Self-consistent calculation of spin transport and magnetization dynamics
- Phenomenological description of the nonlocal magnetization relaxation in magnonics, spintronics, and domain-wall dynamics
- Theory of spin magnetohydrodynamics
- Spin-Orbit Torques and Anisotropic Magnetization Damping in Skyrmion Crystals
- Influence of nonlocal damping on the field-driven domain wall motion
- Chiral damping, chiral gyromagnetism and current-induced torques in textured one-dimensional Rashba ferromagnets
- Intrinsic Spin Torque Without Spin-Orbit Coupling
- Effect of spin diffusion on current generated by spin motive force
- Theory of magnon motive force in chiral ferromagnets
- Anomalous Feedback and Negative Domain Wall Resistance
Cited by in corpus (7)
- Disentangling factors governing Dzyaloshinskii domain wall creep in Co/Ni thin films using PtIr seedlayers
- Atomic antiferromagnetic domain wall propagation beyond the relativistic limit
- Comparative study of methodologies to compute the intrinsic Gilbert damping: interrelations, validity and physical consequences
- Gilbert damping in non-collinear magnetic system
- Effect of Chiral Damping on the dynamics of chiral domain walls and skyrmions
- Theory of chiral effects in magnetic textures with spin-orbit coupling
- Generalization of the Landau-Lifshitz-Gilbert equation by multi-body contributions to Gilbert damping for non-collinear magnets