Ab-initio GMR and current-induced torques in Au/Cr multilayers

Abstract

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.

8 pages, 6 figures

References in corpus (3)

• Spin transfer in an antiferromagnet
• Inelastic scattering in ferromagnetic and antiferromagnetic metal spintronics
• Transport properties of nanosystems with conventional and unconventional charge density waves

Cited by in corpus (6)

• Spin-orbit coupling induced anisotropy effects in bimetallic antiferromagnets: A route towards antiferromagnetic spintronics
• Phenomenology of Current-Induced Dynamics in Antiferromagnets
• Staggered Dynamics in Antiferromagnets by Collective Coordinates
• Spin-transfer torques in anti-ferromagnetic metals from first principles
• Current-Induced Torques in Magnetic Metals: Beyond Spin Transfer
• Spin torque and waviness in magnetic multilayers: a bridge between Valet-Fert theory and quantum approaches