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- Title
Spin-motive force and orbital-motive force: from magnon Bose-Einstein condensation to chiral Weyl superfluids.
- Authors
Volovik, G.
- Abstract
Spin-motive geometric force acting on electrons in metallic ferromagnets is extended to spin-motive force in magnon Bose-Einstein condensate, which is represented by phase-coherent precession of magnetization, and to the orbital-motive force in superfluid He-A. In He-A there are two contributions to the orbitalmotive force. One of them comes from the chiral nature of this liquid. Another one originates from chiral Weyl fermions living in the vicinity of the topologically protected Weyl points, and is related to the phenomenon of chiral anomaly.
- Subjects
FORCE &; energy; BOSE-Einstein condensation; SUPERFLUIDITY; CHIRALITY; FERROMAGNETIC materials; MAGNETIZATION
- Publication
JETP Letters, 2013, Vol 98, Issue 8, p480
- ISSN
0021-3640
- Publication type
Article
- DOI
10.1134/S0021364013210145