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Domain-wall creep driven by spin torque in nanoscale ferromagnetic cylinders

Singh, Amrita and Ghosh, Arindam (2011) Domain-wall creep driven by spin torque in nanoscale ferromagnetic cylinders. In: Physical Review B: Condensed Matter and Materials Physics, 84 (6).

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Official URL: http://prb.aps.org/abstract/PRB/v84/i6/e060407

Abstract

We have explored the mechanism of spin-torque-driven domain-wall (DW) depinning in cylindrical nanowires of nickel using noise in electrical resistance. We find that the spectral slope of noise is a sensitive probe to the DW kinetics that reveals a creeplike behavior of the DWs at the depinning threshold, and diffusive DW motion at higher spin-torque drive. Different regimes of DW kinetics were characterized by universal kinetic exponents.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to The American Physical Society.
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Date Deposited: 15 Sep 2011 10:51
Last Modified: 15 Sep 2011 10:51
URI: http://eprints.iisc.ernet.in/id/eprint/40443

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