Effect of Polarized Current on the Magnetic State of Antiferromagnet

Abstract

We provide evidence for the effects of spin polarized current on a nanofabricated antiferromagnet incorporated into a spin-valve structure. Signatures of current-induced effects include bipolar steps in differential resistance, current-induced changes of exchange bias correlated with these steps, and deviations from the statistics expected for thermally activated switching of spin valves. We explain our observations by a combination of spin torque exerted on the interfacial antiferromagnetic moments, and electron-magnon scattering in antiferromagnet.

arXiv comment4 pages, 4 figures

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