JETP Letters

, Volume 98, Issue 8, pp 480–483 | Cite as

Spin-motive force and orbital-motive force: from magnon Bose-Einstein condensation to chiral Weyl superfluids

  • G. E. Volovik


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 3He-A. In 3He-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.


JETP Letter Orbital Angular Momentum Gauge Field Berry Phase Spin Motive 
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Copyright information

© Pleiades Publishing, Inc. 2013

Authors and Affiliations

  1. 1.Low Temperature LaboratoryAalto University, School of Science and TechnologyHelsinkiFinland

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