Abstract
We express the 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.
Original language | English |
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Article number | 127204 |
Journal | Physical review letters |
Volume | 100 |
Issue number | 12 |
DOIs | |
Publication status | Published - 2008 Mar 28 |
Externally published | Yes |
ASJC Scopus subject areas
- Physics and Astronomy(all)