Spin-motive force due to a gyrating magnetic vortex.
basic_science · Level V
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- Record sourced from PubMed, PMID 22617285.
- Also identified by DOI 10.1038/ncomms1824.
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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.