Spin Transfer Torque for Continuously Variable Magnetization

Abstract

We report quantum and semi-classical calculations of spin current and spin-transfer torque in a free-electron Stoner model for systems where the magnetization varies continuously in one dimension.Analytic results are obtained for an infinite spin spiral and numerical results are obtained for realistic domain wall profiles. The adiabatic limit describes conduction electron spins that follow the sum of the exchange field and an effective, velocity-dependent field produced by the gradient of the magnetization in the wall. Non-adiabatic effects arise for short domain walls but their magnitude decreases exponentially as the wall width increases. Our results cast doubt on the existence of a recently proposed non-adiabatic contribution to the spin-transfer torque due to spin flip scattering.

11 pages, 9 figures

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Cited by in corpus (64)

• Spin Transfer Torques
• Emergent electrodynamics of skyrmions in a chiral magnet
• Microscopic approach to current-driven domain wall dynamics
• Chirality from interfacial spin-orbit coupling effects in magnetic bilayers
• Microscopic Calculation of Spin Torques in Disordered Ferromagnets
• Real-Space Berry Phases - Skyrmion Soccer
• Theory of current-driven magnetization dynamics in inhomogeneous ferromagnets
• Spin pumping by a field-driven domain wall
• Functional Keldysh Theory of Spin Torques
• Non-adiabatic spin torque investigated using thermally activated magnetic domain wall dynamics
• Non-Adiabatic Spin Transfer Torque in Real Materials
• Spin Pumping of Current in Non-Uniform Conducting Magnets
• Spin torque and force due to current for general spin textures
• Adiabatic Domain Wall Motion and Landau-Lifshitz Damping
• Spin-transfer torques for domain walls in antiferromagnetically coupled ferrimagnets
• Spin Dynamics with Inertia in Metallic Ferromagnets
• A unified drift-diffusion theory for transverse spin currents in spin valves, domain walls and other textured magnets
• Topological Hall and Spin Hall Effects in Disordered Skyrmionic Textures
• Spin and charge pumping by steady or pulse current-driven magnetic domain wall: A self-consistent multiscale time-dependent-quantum/time-dependent-classical approach
• A simple vision of current induced spin torque in domain walls
• Theory of spin current in chiral helimagnet
• Spin-wave contributions to current-induced domain wall dynamics
• Spin transfer torque in continuous textures: semiclassical Boltzmann approach
• Thermally Assisted Current-Driven Skyrmion Motion
• Giant current-driven domain wall mobility in (Ga,Mn)As
• Effects of non-adiabaticity on the voltage generated by a moving domain wall
• Theory of Domain Wall Dynamics under Current
• Gauge Field Formulation of Adiabatic Spin Torques
• Self-consistent calculation of spin transport and magnetization dynamics
• Magnetic domain wall motion by spin transfer
• Enhanced Non-Adiabaticity in Vortex Cores due to the Emergent Hall Effect
• Transport magnetic currents driven by moving kink crystal in chiral helimagnets
• Drastic emergence of huge negative spin-transfer torque in atomically thin Co layers
• Unified Description of the Intrinsic Spin-Hall Effects
• Spin-transfer physics and the model of ferromagnetism in (Ga,Mn)As
• Current driven magnetization dynamics in helical spin density waves
• Influence of magnetic viscosity on domain wall dynamics under spin-polarized currents
• Asymmetric Ferromagnetic Resonance, Universal Walker Breakdown, and Counterflow Domain Wall Motion in the Presence of Multiple Spin-Orbit Torques
• Intrinsic non-adiabatic topological torque in magnetic skyrmions and vortices
• Spin-Transfer Torque in Helical Spin-Density Waves
• Magnetic domain-wall motion twisted by nanoscale probe-induced spin transfer
• Adiabatic and nonadiabatic spin torques induced by spin-triplet supercurrent
• Spin-orbit-coupling induced torque in ballistic domain walls: equivalence of charge-pumping and nonequilibrium magnetization formalisms
• Current-induced non-adiabatic spin torques and domain wall motion with spin relaxation in a ferromagnetic metallic wire
• Intrinsic Spin Torque Without Spin-Orbit Coupling
• Current-induced spin torques in III-V ferromagnetic semiconductors
• Effect of nonadiabatic spin transfer torque on domain wall resonance frequency and mass
• Origin of adiabatic and non-adiabatic spin transfer torques in current-driven magnetic domain wall motion
• Spin-dependent diffraction at ferromagnetic/spin spiral interface
• Unified Semi-Classical Description of Intrinsic Spin-Hall Effect in Spintronic, Optical, and Graphene Systems
• Numerical Computation of Spin-Transfer Torques for Antiferromagnetic Domain walls
• Current-Induced Resonant Motion of a Magnetic Vortex Core: Effect of Nonadiabatic Spin Torque
• Non-equilibrium thermodynamic study of magnetization dynamics in the presence of spin-transfer torque
• The theory of transport in helical spin-structure crystals
• Nonlocal spin torques in Rashba quantum wires with steep magnetic textures
• Topological damping Rashba spin orbit torque in ballistic magnetic domain walls
• Spin-wave-induced spin torque in Rashba spin-orbit coupling system
• Scaling of the Rashba spin-orbit torque in magnetic domain walls
• Algebraic decay of the nonadiabaticity arising through chiral spin transfer torque in magnetic domain walls with Rashba spin-orbit interaction
• First-principles calculations of current-induced spin-transfer torques in magnetic domain walls
• High-mobility inertial domain walls driven by spin-transfer torque in a ferrimagnetic spinel oxide
• Local spin transfer torque and magnetoresistance in domain walls with variable width
• Numerical Study of Current-Induced Domain-Wall Dynamics: Crossover from Spin Transfer to Momentum Transfer
• Spin Transfer Torque in Domain Wall Structures by Keldysh Green Functions