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.
| Original language | English (US) |
|---|---|
| Article number | 107204 |
| Journal | Physical Review Letters |
| Volume | 95 |
| Issue number | 10 |
| DOIs | |
| State | Published - Sep 2 2005 |
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ASJC Scopus subject areas
- Physics and Astronomy(all)
Cite this
Current-spin coupling for ferromagnetic domain walls in fine wires. / Barnes, Stewart; Maekawa, S.
In: Physical Review Letters, Vol. 95, No. 10, 107204, 02.09.2005.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Current-spin coupling for ferromagnetic domain walls in fine wires
AU - Barnes, Stewart
AU - Maekawa, S.
PY - 2005/9/2
Y1 - 2005/9/2
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=27144454887&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=27144454887&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.95.107204
DO - 10.1103/PhysRevLett.95.107204
M3 - Article
AN - SCOPUS:27144454887
VL - 95
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 10
M1 - 107204
ER -