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

dc.contributorUniversidade Estadual Paulista (Unesp)
dc.contributorFlorida State University
dc.date.accessioned2014-05-20T15:26:47Z
dc.date.available2014-05-20T15:26:47Z
dc.date.created2014-05-20T15:26:47Z
dc.date.issued2001-04-01
dc.identifierPhysical Review B. College Pk: American Physical Soc, v. 63, n. 14, 4 p., 2001.
dc.identifier0163-1829
dc.identifierhttp://hdl.handle.net/11449/130502
dc.identifier10.1103/PhysRevB.63.140409
dc.identifierWOS:000168059800010
dc.identifier4459191234201599
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.
dc.languageeng
dc.publisherAmerican Physical Soc
dc.relationPhysical Review B
dc.relation1,176
dc.rightsAcesso 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 chains
dc.typeArtículos de revistas


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