Document Type

Article

Publication Date

2005

Abstract

The coupling between a current and a domain wall is examined. In the presence of a finite current and in the absence of a potential which breaks the translational symmetry, there is a perfect transfer of angular momentum from the conduction electrons to the wall. As a result, the ground state is in uniform motion and this remains the case even when relaxation is included. This is described by, appropriately modified, Landau-Lifshitz-Gilbert equations. The results for a simple pinning model are compared with experiment.

Comments

S.E. Barnes, and S. Maekawa, Physical Review Letters, 95, 107204, 2005. "Copyright © 2005 by the American Physical Society.”

Link to the online abstract: http://link.aps.org/doi/10.1103/PhysRevLett.95.107204

DOI: 10.1103/PhysRevLett.95.107204

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