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 and T. Ono ()
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K. Tanabe: Institute for Chemical Research, Kyoto University
D. Chiba: Institute for Chemical Research, Kyoto University
J. Ohe: Toho University
S. Kasai: Institute for Chemical Research, Kyoto University
H. Kohno: Graduate School of Engineering Science, Osaka University
S. E. Barnes: University of Miami, Coral Gables
S. Maekawa: The Advanced Science Research Center, The Japan Atomic Energy Agency
K. Kobayashi: Institute for Chemical Research, Kyoto University
T. Ono: Institute for Chemical Research, Kyoto University

Nature Communications, 2012, vol. 3, issue 1, 1-5

Abstract: 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.

Date: 2012
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DOI: 10.1038/ncomms1824

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