E-viri
PDF
Recenzirano
Odprti dostop
-
Tretiakov, O A; Clarke, D; Chern, Gia-Wei; Bazaliy, Ya B; Tchernyshyov, O
Physical review letters, 03/2008, Letnik: 100, Številka: 12Journal Article
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.
