Domain-wall-controlled transverse spin injection

Domain-wall-controlled transverse spin injection E. van der Bijl, R. E. Troncoso, R. A. Duine (Submitted on 21 Dec 2012) We propose an effect whereby an electric current along the interface between a ferromagnetic and normal metal leads to injection of pure spin current into the normal metal, if the magnetization-direction in the ferromagnet varies along the direction of current. For the specific example of a ferromagnetic domain wall, we compute the inverse spin-Hall effect voltage this spin current gives rise to when injected into a Pt layer. Furthermore, we show that this pure spin current leads to modification of the parameters that govern spin transfer and current-driven domain-wall motion, which can be use to optimize the latter in layered magnetic systems. This effect in principle enables control over the location of spin-current injection in devices. Subjects: \tMesoscale and Nanoscale Physics (cond-mat.mes-hall) Cite as: \tarXiv:1212.5435 [cond-mat.mes-hall] (or arXiv:1212.5435v1 [cond-mat.mes-hall] for this version) Submission history From: Erik van der Bijl M.Sc. [view email] [v1] Fri, 21 Dec 2012 13:51:40 GMT (667kb,D)