Theory of Domain Wall Dynamics under Current

Abstract

Microscopic theory of domain wall dynamics under electric current is reviewed. Domain wall is treated as rigid and planar. The spin-transfer torque and forces on the wall are derived based on the $s$-$d$ exchange interaction between localized spins and conduction electrons, treating non-adiabaticity expressed by the gauge field perturbatively. Effect of spin relaxation is also studied.

short review paper for J. Phys. Soc. Jpn., "Advances in Spintronics"

References in corpus (7)

• Microscopic Calculation of Spin Torques in Disordered Ferromagnets
• Functional Keldysh Theory of Spin Torques
• Threshold Current of Domain Wall Motion under Extrinsic Pinning, $\beta$-Term and Non-Adiabaticity
• Spin torque and force due to current for general spin textures
• Current-excited magnetization dynamics in narrow ferromagnetic wires
• Efficient current-induced domain-wall displacement SrRuO3
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Cited by in corpus (4)

• Microscopic approach to current-driven domain wall dynamics
• Current-induced domain wall motion in Rashba spin-orbit system
• Calculation of current-induced torque from spin continuity equation
• Numerical Study of Current-Induced Domain-Wall Dynamics: Crossover from Spin Transfer to Momentum Transfer