Ab-initio GMR and current-induced torques in Au/Cr multilayers
  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 $\sim 100$ times smaller than typical ferromagnetic metal circuit switching densities. 
P.M. Haney, D. Waldron, R.A. Duine, A.S. Nunez, H. Guo, A.H. MacDonald