Spin-motive Force

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Nature.com | scientific reports

Nature Communications | Article

Source: http://www.nature.com/ncomms/journal/v3/n5/full/ncomms1824.html

Spin-motive force due to a gyrating magnetic vortex

K. Tanabe, D. Chiba, J. Ohe, S. Kasai, H. Kohno, S. E. Barnes, S. Maekawa, K. Kobayashi & T. Ono

Nature Communications 3, Article number: 845 doi:10.1038/ncomms1824
Received: 16 December 2011 | Accepted: 05 April 2012 Published: 22 May 2012

Abstract

A change of magnetic flux through a circuit induces an electromotive force. By analogy, a recently predicted force that results from the motion of non-uniform spin structures has been termed the spin-motive force. Although recent experiments seem to confirm its presence, a direct signature of the spin-motive force has remained elusive. Here we report the observation of a real-time spin-motive force produced by the gyration of a magnetic vortex core. We find a good agreement between the experimental results, theory and micromagnetic simulations, which taken as a whole provide strong evidence in favour of a spin-motive force.
Source: http://www.nature.com/ncomms/journal/v3/n5/full/ncomms1824.html