Abstract
The usual Faraday's Law E=-dΦ/dt determines an electromotive force E which accounts only for forces resulting from the charge of electrons. In ferromagnetic materials, in general, there exist nonconservative spin forces which also contribute to E. These might be included in Faraday's Law if the magnetic flux Φ is replaced by [/(-e)]γ, where γ is a Berry phase suitably averaged over the electron spin direction. These contributions to E represent the requirements of energy conservation in itinerant ferromagnets with time dependent order parameters.
| Original language | English (US) |
|---|---|
| Article number | 246601 |
| Journal | Physical Review Letters |
| Volume | 98 |
| Issue number | 24 |
| DOIs | |
| State | Published - Jun 15 2007 |
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ASJC Scopus subject areas
- Physics and Astronomy(all)
Cite this
Generalization of Faraday's law to include nonconservative spin forces. / Barnes, Stewart; Maekawa, S.
In: Physical Review Letters, Vol. 98, No. 24, 246601, 15.06.2007.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Generalization of Faraday's law to include nonconservative spin forces
AU - Barnes, Stewart
AU - Maekawa, S.
PY - 2007/6/15
Y1 - 2007/6/15
N2 - The usual Faraday's Law E=-dΦ/dt determines an electromotive force E which accounts only for forces resulting from the charge of electrons. In ferromagnetic materials, in general, there exist nonconservative spin forces which also contribute to E. These might be included in Faraday's Law if the magnetic flux Φ is replaced by [/(-e)]γ, where γ is a Berry phase suitably averaged over the electron spin direction. These contributions to E represent the requirements of energy conservation in itinerant ferromagnets with time dependent order parameters.
AB - The usual Faraday's Law E=-dΦ/dt determines an electromotive force E which accounts only for forces resulting from the charge of electrons. In ferromagnetic materials, in general, there exist nonconservative spin forces which also contribute to E. These might be included in Faraday's Law if the magnetic flux Φ is replaced by [/(-e)]γ, where γ is a Berry phase suitably averaged over the electron spin direction. These contributions to E represent the requirements of energy conservation in itinerant ferromagnets with time dependent order parameters.
UR - http://www.scopus.com/inward/record.url?scp=34547284943&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=34547284943&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.98.246601
DO - 10.1103/PhysRevLett.98.246601
M3 - Article
AN - SCOPUS:34547284943
VL - 98
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 24
M1 - 246601
ER -