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Current-spin coupling for ferromagnetic domain walls in fine wires

S. E. Barnes·S. Maekawa
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Abstract

The coupling between a current and a domain wall is examined. In the presence of a finite current and 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. This remains the case when relaxation is accounted for. This is described by, appropriately modified, Landau-Lifshitz-Gilbert equations.

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S. E. Barnes, S. Maekawa. 2004-10-01. Current-spin coupling for ferromagnetic domain walls in fine wires. https://doi.org/10.1103/physrevlett.95.107204

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