Effect of polarized current on the magnetic state of an antiferromagnet

Effect of polarized current on the magnetic state of an antiferromagnet

We provide evidence for the effects of spin polarized current on a nanofabricated antiferromagnet incorporated into a spin-valve structure. The signatures of the current-induced effects include bipolar steps in differential resistance, current-induced changes of exchange bias correlated with these s...

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Veröffentlicht in:Physical review letters 2007-07, Vol.99 (4), p.046602-046602, Article 046602
Hauptverfasser: Urazhdin, Sergei, Anthony, Nicholas
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creator Urazhdin, Sergei
Anthony, Nicholas
description We provide evidence for the effects of spin polarized current on a nanofabricated antiferromagnet incorporated into a spin-valve structure. The signatures of the 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 an antiferromagnet.
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title Effect of polarized current on the magnetic state of an antiferromagnet
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