Theory of Domain Wall Dynamics under Current
arXiv:0801.3517 · doi:10.1143/JPSJ.77.031003
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"