Charge and spin transport in spin valves with anisotropic spin relaxation

Details Charge and spin transport in spin valves with anisotropic spin relaxation Charge and spin transport in spin valves with anisotropic spin relaxation

2006-10-27

arxiv.org/abs/cond-mat/0610770v1

Phys. Rev. B 75, 075313 (2007)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

8 pages

Scientific paper

10.1103/PhysRevB.75.075313

We investigate effects of spin-orbit splitting on electronic transport in a spin valve consisting of a large quantum dot defined on a two-dimensional electron gas with two ferromagnetic contacts. In the presence of both structure inversion asymmetry (SIA) and bulk inversion asymmetry (BIA) a giant anisotropy in the spin-relaxation times has been predicted. We show how such an anisotropy affects the electronic transport properties such as the angular magnetoresistance and the spin-transfer torque. Counterintuitively, anisotropic spin-relaxation processes sometimes enhance the spin accumulation.

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