Dissipative dynamics of magnetic solitons in metals

Details Dissipative dynamics of magnetic solitons in metals Dissipative dynamics of magnetic solitons in metals

2009-10-30

arxiv.org/abs/0910.5912v2

Phys. Rev. B 81, 060404(R) (2010)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

1 figure

Scientific paper

10.1103/PhysRevB.81.060404

Soliton dynamics in spin-textured metals generate electrical currents, which produce backaction through spin torques. We modify the Landau-Lifshitz-Gilbert equation and the corresponding solitonic equations of motion to include such higher-order texture effects. We also find a quasistatic equation for the induced electrochemical potential, which needs to be solved for self-consistently, in the incompressible limit. As an example, we consider the orbital motion of a vortex in a point-contact spin valve, and discuss modifications of orbit radius, frequency, and dissipation power.

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