Nonlinear magnetotransport in dual spin valves
Mesoscale and Nanoscale Physics
2015-05-18 v2
Abstract
Recent experimental measurements of magnetoresistance in dual spin valves [A. Aziz et al., Phys. Rev. Lett. 103, 237203 (2009)] reveal some nonlinear features of transport, which have not been observed in other systems. We propose a phenomenological model describing current-dependent resistance (and giant magnetoresistance) in double spin valves. The model is based on a modified Valet-Fert approach, and takes into account the dependence of bulk/interface resistance and bulk/interface spin asymmetry parameters for the central magnetic layer on spin accumulation, and consequently on charge current. Such a nonlinear model accounts for recent experimental observations.
Keywords
Cite
@article{arxiv.1004.1439,
title = {Nonlinear magnetotransport in dual spin valves},
author = {P. Balaz and J. Barnas},
journal= {arXiv preprint arXiv:1004.1439},
year = {2015}
}