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American Physical Society, Physical Review Letters, 12(100), 2008

DOI: 10.1103/physrevlett.100.127204

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Dynamics of domain walls in magnetic nanostrips

Journal article published in 2007 by O. A. Tretiakov ORCID, D. Clarke, Gia-Wei Chern, Y.-A. B. Bazaliy, O. Tchernyshyov ORCID
This paper is available in a repository.
This paper is available in a repository.

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Abstract

We express dynamics of domain walls in ferromagnetic nanowires in terms of collective coordinates generalizing Thiele's steady-state results. For weak external perturbations the dynamics is dominated by a few soft modes. The general approach is illustrated on the example of a vortex wall relevant to recent experiments with flat nanowires. A two-mode approximation gives a quantitatively accurate description of both the steady viscous motion of the wall in weak magnetic fields and its oscillatory behavior in moderately high fields above the Walker breakdown. ; Comment: 4 pages, update to published version