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Dynamics of domain walls in magnetic nanostrips

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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.

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      Journal
      31 May 2007
      2008-02-14
      0705.4463 10.1103/PhysRevLett.100.127204
      Custom metadata
      Phys. Rev. Lett. 100, 127204 (2008)
      4 pages, update to published version
      cond-mat.mtrl-sci

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