| Images of a spin-torque-driven magnetic nano-oscillator. | |
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MedLine Citation:
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PMID: 21599407 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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We present the first space- and time-resolved images of the spin-torque-induced steady-state oscillation of a magnetic vortex in a spin-valve nanostructure. We find that the vortex structure in a nanopillar is considerably more complicated than the 2D idealized structure often-assumed, which has important implications for the driving efficiency. The sense of the vortex gyration is uniquely determined by the vortex core polarity, confirming that the spin-torque acts as a source of negative damping even in such a strongly nonuniform magnetic system. The orbit radius is ∼10 nm, in agreement with micromagnetic simulations. |
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Authors:
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X W Yu; V S Pribiag; Y Acremann; A A Tulapurkar; T Tyliszczak; K W Chou; B Bräuer; Z-P Li; O J Lee; P G Gowtham; D C Ralph; R A Buhrman; J Stöhr |
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Publication Detail:
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Type: Journal Article Date: 2011-04-21 |
Journal Detail:
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Title: Physical review letters Volume: 106 ISSN: 1079-7114 ISO Abbreviation: Phys. Rev. Lett. Publication Date: 2011 Apr |
Date Detail:
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Created Date: 2011-05-23 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0401141 Medline TA: Phys Rev Lett Country: United States |
Other Details:
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Languages: eng Pagination: 167202 Citation Subset: IM |
Affiliation:
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Department of Applied Physics, Stanford University, Stanford, California 94305, USA. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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