Microscopic Calculation of Spin Torques in Disordered Ferromagnets

Abstract

Effects of conduction electrons on magnetization dynamics, represented by spin torques, are calculated microscopically in the first order in spatial gradient and time derivative of magnetization. Special attention is paid to the so-called $\beta$-term and the Gilbert damping, $\alpha$, in the presence of electrons' spin-relaxation processes, which are modeled by quenched magnetic (and spin-orbit) impurities. The obtained results such as $\alpha \ne \beta$ hold for localized as well as itinerant ferromagnetism.

4 pages

References in corpus (1)

• Threshold Current of Domain Wall Motion under Extrinsic Pinning, $\beta$-Term and Non-Adiabaticity

Cited by in corpus (23)

• Microscopic approach to current-driven domain wall dynamics
• Current-induced domain wall motion in Rashba spin-orbit system
• Theory of current-driven magnetization dynamics in inhomogeneous ferromagnets
• Spin pumping by a field-driven domain wall
• Functional Keldysh Theory of Spin Torques
• Thermally-Assisted Current-Driven Domain Wall Motion
• Spin torque and force due to current for general spin textures
• Adiabatic Domain Wall Motion and Landau-Lifshitz Damping
• Current-Induced Torques in Magnetic Metals: Beyond Spin Transfer
• Thermoelectric spin transfer in textured magnets
• Effects of non-adiabaticity on the voltage generated by a moving domain wall
• Theory of Domain Wall Dynamics under Current
• Creep of current-driven domain-wall lines: intrinsic versus extrinsic pinning
• Gauge Field Formulation of Adiabatic Spin Torques
• Theory of spin magnetohydrodynamics
• Calculation of current-induced torque from spin continuity equation
• Inverse Spin Hall Effect Driven by Spin Motive Force
• Gilbert damping and spin Coulomb drag in a magnetized electron liquid with spin-orbit interaction
• Spin-Transfer Torque in Helical Spin-Density Waves
• Current-induced microwave excitation of a domain wall confined in a magnetic wire with bi-axial anisotropy
• Current-Induced Resonant Motion of a Magnetic Vortex Core: Effect of Nonadiabatic Spin Torque
• The quantum-mechanical basis of an extended Landau-Lifshitz-Gilbert equation for a current-carrying ferromagnetic wire
• Non-equilibrium thermodynamic study of magnetization dynamics in the presence of spin-transfer torque