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arXiv · 1311.0229

Domain wall displacement by remote spin-current injection

Petr N. Skirdkov·Konstantin A. Zvezdin·Anatoly D. Belanovsky·Julie Grollier·Vincent Cros·Caroline A. Ross·Anatoly K. Zvezdin
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Abstract

We demonstrate numerically the ability to displace a magnetic domain wall by a remote spin current injection. We consider a long and narrow magnetic nanostripe with a single domain wall (DW). The spin-polarized current is injected perpendicularly to the plane of the film (CPP) through a small nanocontact which is located at certain distance from the domain wall initial position. We show theoretically that the DW motion can be initiated not only by conventional spin-transfer torque but also by indirect spin-torque, created by a remote spin-current injection and then transferred to the DW by the exchange-spring mechanism. An analytical description of this effect is proposed. This finding may lead to a solution of bottleneck problems of DW motion-based spintronic and neuromorphic devices with perpendicular spin-current injection.

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Petr N. Skirdkov, Konstantin A. Zvezdin, Anatoly D. Belanovsky, Julie Grollier, Vincent Cros, Caroline A. Ross, Anatoly K. Zvezdin. 2014-03-27. Domain wall displacement by remote spin-current injection. https://doi.org/10.1063/1.4883740

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