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Nonlinear magnetic vortex dynamics in a circular nanodot excited by spin-polarized current

dc.contributor.authorGusliyenko, Kostyantyn
dc.contributor.authorSukhostavets, Oksana
dc.contributor.authorBerkov, Dmitry V.
dc.date.accessioned2015-11-24T11:35:04Z
dc.date.available2015-11-24T11:35:04Z
dc.date.issued2014-08-08
dc.identifier.citationNanoscale Research Letters 9 : (2014) // Article ID 386es
dc.identifier.issn1556-276X
dc.identifier.urihttp://hdl.handle.net/10810/16163
dc.description.abstractWe investigate analytically and numerically nonlinear vortex spin torque oscillator dynamics in a circular magnetic nanodot induced by a spin-polarized current perpendicular to the dot plane. We use a generalized nonlinear Thiele equation including spin-torque term by Slonczewski for describing the nanosize vortex core transient and steady orbit motions and analyze nonlinear contributions to all forces in this equation. Blue shift of the nano-oscillator frequency increasing the current is explained by a combination of the exchange, magnetostatic, and Zeeman energy contributions to the frequency nonlinear coefficient. Applicability and limitations of the standard nonlinear nano-oscillator model are discussed.es
dc.description.sponsorshipThis work was supported in part by the Spanish MINECO grant FIS2010-20979-C02-01. KYG acknowledges support by IKERBASQUE (the Basque Foundation for Science).es
dc.language.isoenges
dc.publisherSpringer International Publishinges
dc.relationinfo:eu-repo/grantAgreement/MINECO/FIS2010-20979-C02-01
dc.rightsinfo:eu-repo/semantics/openAccesses
dc.subjectmagnetic nanodotes
dc.subjectnano-oscillatores
dc.subjectvortexes
dc.subjectspin torque transferes
dc.subjectexcitationes
dc.subjectdrivenes
dc.titleNonlinear magnetic vortex dynamics in a circular nanodot excited by spin-polarized currentes
dc.typeinfo:eu-repo/semantics/articlees
dc.rights.holder© 2014 Guslienko et al.; licensee Springer. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited.es
dc.relation.publisherversionhttp://www.nanoscalereslett.com/content/9/1/386/abstractes
dc.identifier.doi10.1186/1556-276X-9-386
dc.departamentoesFísica de materialeses_ES
dc.departamentoeuMaterialen fisikaes_ES
dc.subject.categoriaMATERIALS SCIENCE
dc.subject.categoriaPHYSICS, CONDENSED MATTER


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