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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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
Publication:	Physical Review B: Condensed Matter and Materials Physics
Publisher:	The American Physical Society
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.ac.in/id/eprint/40443

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