Dynamics of domain walls in magnetic nanostrips

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.

4 pages, update to published version

References in corpus (2)

• Fractional vortices and composite domain walls in flat nanomagnets
• Composite domain walls in flat nanomagnets: the magnetostatic limit

Cited by in corpus (1)

• Dynamics of a vortex domain wall in a magnetic nanostrip: an application of the collective coordinate approach