We report on an {\em ab-initio} study of giant magnetoresistance (GMR) and current-induced-torques (CITs) in Cr/Au multilayers that is based on non-equilibrium Green's functions and spin density functional theory. We find substantial GMR due primarily to a spin-dependent resonance centered at the Cr/Au interface and predict that the CITs are strong enough to switch the antiferromagnetic order parameter at current-densities ∼100 times smaller than typical ferromagnetic metal circuit switching densities.
@article{arxiv.cond-mat/0611599,
title = {Ab-initio GMR and current-induced torques in Au/Cr multilayers},
author = {P. M. Haney and D. Waldron and R. A. Duine and A. S. Nunez and H. Guo and A. H. MacDonald},
journal= {arXiv preprint arXiv:cond-mat/0611599},
year = {2009}
}