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We report on an {\em ab-initio} study of giant magnetoresistance (GMR) andcurrent-induced-torques (CITs) in Cr/Au multilayers that is based onnon-equilibrium Green's functions and spin density functional theory. We findsubstantial GMR due primarily to a spin-dependent resonance centered at theCr/Au interface and predict that the CITs are strong enough to switch theantiferromagnetic order parameter at current-densities $\sim 100$ times smallerthan typical ferromagnetic metal circuit switching densities.Comment: 8 pages, 6 figure

physical review. b, condensed matter and materials physics

<i>Ab initio</i>giant magnetoresistance and current-induced torques in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi mathvariant="normal">Cr</mml:mi><mml:mo>∕</mml:mo><mml:mi mathvariant="normal">Au</mml:mi><mml:mo>∕</mml:mo><mml:mi mathvariant="normal">Cr</mml:mi></mml:mrow></mml:math>multilayers

Ab initiogiant magnetoresistance and current-induced torques inCr∕Au∕Crmultilayers