Publicação:
Origin of spin incommensurability in hole-doped S=1 Y2-xCaxBaNiO5 chains

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dc.contributor.authorMalvezzi, André Luiz [UNESP]
dc.contributor.authorDagotto, E. [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionFlorida State University
dc.date.accessioned2014-05-20T15:26:47Z
dc.date.available2014-05-20T15:26:47Z
dc.date.issued2001-04-01
dc.description.abstractSpin incommensurability (IC) has been recently experimentally discovered in the hole-doped Ni-oxide chain compound Y2-xCaxBaNiO5 [G. Xu et al., Science 289, 419 (2000)]. Here a two orbital model for this material is studied using computational techniques. Spin IC is observed in a wide range of densities and couplings. The phenomenon originates in antiferromagnetic correlations across holes dynamically generated to improve hole movement, as it occurs in the one-dimensional Hubbard model and in recent studies of the two-dimensional extended t-J model. The close proximity of ferromagnetic and phase-separated states in parameter space is also discussed.en
dc.description.affiliationUniv Estadual Paulista, Fac Ciências, Dept Fis, BR-17033360 São Paulo, Brazil
dc.description.affiliationFlorida State Univ, Dept Phys, Tallahassee, FL 32306 USA
dc.description.affiliationFlorida State Univ, Natl High Magnet Field Lab, Tallahassee, FL 32306 USA
dc.description.affiliationUnespUniversidade Estadual Paulista, Departamento de Física, Faculdade de Ciências, Caixa Postal 473, 17.033-360 Bauru, São Paulo
dc.format.extent1404091-1404094
dc.identifierhttp://dx.doi.org/10.1103/PhysRevB.63.140409
dc.identifier.citationPhysical Review B. College Pk: American Physical Soc, v. 63, n. 14, 4 p., 2001.
dc.identifier.doi10.1103/PhysRevB.63.140409
dc.identifier.issn0163-1829
dc.identifier.lattes4459191234201599
dc.identifier.urihttp://hdl.handle.net/11449/130502
dc.identifier.wosWOS:000168059800010
dc.language.isoeng
dc.publisherAmerican Physical Soc
dc.relation.ispartofPhysical Review B
dc.relation.ispartofsjr1,176
dc.rights.accessRightsAcesso restrito
dc.sourceScopus
dc.subjectNeutron scattering
dc.subjectPhase separation
dc.subjectSemiconductor
dc.subjectSpin trapping
dc.subjectTechnique
dc.titleOrigin of spin incommensurability in hole-doped S=1 Y2-xCaxBaNiO5 chainsen
dc.typeArtigo
dcterms.licensehttp://publish.aps.org/authors/transfer-of-copyright-agreement
dcterms.rightsHolderAmerican Physical Soc
dspace.entity.typePublication
unesp.author.lattes4459191234201599[1]
unesp.author.orcid0000-0002-3195-9551[1]
unesp.campusUniversidade Estadual Paulista (UNESP), Faculdade de Ciências, Baurupt
unesp.departmentFísica - FCpt

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