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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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|
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