Effect of Polarized Current on the Magnetic State of Antiferromagnet

Details Effect of Polarized Current on the Magnetic State of Antiferromagnet Effect of Polarized Current on the Magnetic State of Antiferromagnet

2007-03-12

arxiv.org/abs/cond-mat/0703281v2

Physics

Condensed Matter

Materials Science

4 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.99.046602

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.

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