Intrinsic Coupling between Current and Domain Wall Motion in (Ga,Mn)As

Abstract

We consider current-induced domain wall motion and, the reciprocal process, moving domain wall-induced current. The associated Onsager coefficients are expressed in terms of scattering matrices. Uncommonly, in (Ga,Mn)As, the effective Gilbert damping coefficient ${\alpha }_w$ and the effective out-of-plane spin transfer torque parameter ${\beta }_w$ are dominated by spin-orbit interaction in combination with scattering off the domain wall, and not scattering off extrinsic impurities. Numerical calculations give ${\alpha }_w\sim 0.01$ and ${\beta }_w\sim 1$ in dirty (Ga,Mn)As. The extraordinary large ${\beta }_w$ parameter allows experimental detection of current or voltage induced by domain wall motion in (Ga,Mn)As.

Final version accepted by Physical Review Letters

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Cited by in corpus (21)

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• Spin-dependent phenomena and device concepts explored in (Ga,Mn)As
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• Current-induced torques in textured Rashba ferromagnets
• Nanoscale Magnetic Heat Pumps and Engines
• Magnetization Dissipation in Ferromagnets from Scattering Theory
• Gilbert damping in noncollinear ferromagnets
• Non-local Gilbert damping tensor within the torque-torque correlation model
• Emergent gauge fields from curvature in single layers of transition-metal dichalcogenides
• Magnetic rogue wave in a perpendicular anisotropic ferromagnetic nanowire with spin-transfer torque
• Magnetocaloritronic nanomachines
• Current-driven domain wall motion across a wide temperature range in a (Ga,Mn)(As,P) device
• Thermopower and Thermally Induced Domain Wall Motion in (Ga,Mn)As
• Spin-orbit-coupling induced torque in ballistic domain walls: equivalence of charge-pumping and nonequilibrium magnetization formalisms
• Dissipative dynamics of magnetic solitons in metals
• Theory of chiral effects in magnetic textures with spin-orbit coupling
• Hole spin relaxation and coefficients in Landau-Lifshitz-Gilbert equation in ferromagnetic GaMnAs
• Optimal time-dependent polarized current pattern for fast domain wall propagation in nanowires: Exact solutions for biaxial and uniaxial anisotropies
• Existence of vertical spin stiffness in Landau-Lifshitz-Gilbert equation in ferromagnetic semiconductors
• Reversal and Termination of Current-Induced Domain Wall Motion via Magnonic Spin-Transfer Torque
• Spin motive forces and current fluctuations due to Brownian motion of domain walls