Current-driven vortex oscillations in metallic nanocontacts

C. Chappert; G. Hrkac; Joo-Von Kim; L. Lagae; M. van Kampen; P. Crozat; Q. Mistral; T. Devolder; T. Schrefl

Current-driven vortex oscillations in metallic nanocontacts

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arxiv 0710.5680 v1 pith:TJNQGXDZ submitted 2007-10-30 cond-mat.mtrl-sci

Current-driven vortex oscillations in metallic nanocontacts

Q. Mistral , M. van Kampen , G. Hrkac , Joo-Von Kim , T. Devolder , P. Crozat , C. Chappert , L. Lagae

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T. Schrefl

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classification cond-mat.mtrl-sci

keywords vortexmetallicmotionoscillationsagreementanalyticalcontactcurrent-driven

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We present experimental evidence of sub-GHz spin-transfer oscillations in metallic nano-contacts that are due to the translational motion of a magnetic vortex. The vortex is shown to execute large-amplitude orbital motion outside the contact region. Good agreement with analytical theory and micromagnetics simulations is found.

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