Quantum spin tunneling of magnetization in small ferromagnetic particles

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dc.contributor.authorGaletti, Diogenes [UNESP]
dc.contributor.authorPimentel, B. M. [UNESP]
dc.contributor.authorLima, C. L.
dc.contributor.authorSilva, E. C. [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.date.accessioned2014-05-20T14:08:55Z
dc.date.available2014-05-20T14:08:55Z
dc.date.issued2009-04-01
dc.description.abstractAn approach is presented that can also account for the description of small ferromagnetic particle magnetization tunneling. An estimate of the saturation value of an external applied magnetic field along the easy axis is obtained. An analytic expression for the tunneling factor in the absence of an external magnetic field is deduced from the present approach that also allows one to obtain the crossover temperature characterizing the regime where tunneling is dominated by quantum effects. (C) 2009 Published by Elsevier B.V.en
dc.description.affiliationUniv Estadual Paulista, Inst Fis Teor, BR-01405900 São Paulo, Brazil
dc.description.affiliationUniv São Paulo, Inst Fis, BR-05315970 São Paulo, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Inst Fis Teor, BR-01405900 São Paulo, Brazil
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.format.extent1105-1110
dc.identifierhttp://dx.doi.org/10.1016/j.physa.2008.12.044
dc.identifier.citationPhysica A-statistical Mechanics and Its Applications. Amsterdam: Elsevier B.V., v. 388, n. 7, p. 1105-1110, 2009.
dc.identifier.doi10.1016/j.physa.2008.12.044
dc.identifier.issn0378-4371
dc.identifier.urihttp://hdl.handle.net/11449/24081
dc.identifier.wosWOS:000264009700007
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofPhysica A: Statistical Mechanics and Its Applications
dc.relation.ispartofjcr2.132
dc.relation.ispartofsjr0,773
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectSpin tunnelingen
dc.subjectSmall ferromagnetic particlesen
dc.titleQuantum spin tunneling of magnetization in small ferromagnetic particlesen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Física Teórica (IFT), São Paulopt

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