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dc.contributor.CRUESPUniversidade Estadual de Campinaspt_BR
dc.typeArtigo de periódicopt_BR
dc.titleRole of orbital degeneracy in double-exchange systemspt_BR
dc.contributor.authorLaad, MSpt_BR
dc.contributor.authorCraco, Ipt_BR
dc.contributor.authorMuller-Hartmann, Ept_BR
unicamp.authorUniv Cologne, Inst Theoret Phys, D-50937 Cologne, Germany UNICAMP, Inst Fis Gleb Wataghin, BR-13083970 Campinas, SP, Brazilpt_BR
dc.subject.wosPhase-diagrampt_BR
dc.subject.wosMagnetoresistancept_BR
dc.subject.wosLa1-xcaxmno3pt_BR
dc.subject.wosLa1-xsrxmno3pt_BR
dc.subject.wosManganitespt_BR
dc.subject.wosScatteringpt_BR
dc.subject.wosOxidept_BR
dc.subject.wosLimitpt_BR
dc.subject.wosFieldpt_BR
dc.subject.wosOrderpt_BR
dc.description.abstractWe investigate the role of orbital degeneracy in the double-exchange model. In the J(H)--> infinity limit, an effective generalized 'Hubbard' model incorporating orbital pseudospin degrees of freedom is derived. The model possesses an exact solution in one and in infinite dimensions. In one-dimension, the metallic phase off 'half-filling' is a Luttinger liquid with pseudospin-charge separation. Using the d=infinity solution for our effective model, we show how many experimental observations for the well-doped (x similar or equal to0.3) three-dimensional manganites La1-xSrxMnO3 can be qualitatively explained by invoking the role of orbital degeneracy in the double exchange model.pt
dc.relation.ispartofPhysical Review Bpt_BR
dc.relation.ispartofabbreviationPhys. Rev. Bpt_BR
dc.publisher.cityCollege Pkpt_BR
dc.publisher.countryEUApt_BR
dc.publisherAmerican Physical Socpt_BR
dc.date.issued2001pt_BR
dc.date.monthofcirculation37043pt_BR
dc.identifier.citationPhysical Review B. American Physical Soc, v. 63, n. 21, 2001.pt_BR
dc.language.isoenpt_BR
dc.description.volume63pt_BR
dc.description.issuenumber21pt_BR
dc.rightsabertopt_BR
dc.sourceWeb of Sciencept_BR
dc.identifier.issn0163-1829pt_BR
dc.identifier.wosidWOS:000169060700056pt_BR
dc.identifier.doi10.1103/PhysRevB.63.214419pt_BR
dc.date.available2014-11-17T08:14:33Z
dc.date.available2015-11-26T16:41:29Z-
dc.date.accessioned2014-11-17T08:14:33Z
dc.date.accessioned2015-11-26T16:41:29Z-
dc.description.provenanceMade available in DSpace on 2014-11-17T08:14:33Z (GMT). No. of bitstreams: 1 WOS000169060700056.pdf: 113751 bytes, checksum: 06f1582603b63b81555318ab4b572f3c (MD5) Previous issue date: 2001en
dc.description.provenanceMade available in DSpace on 2015-11-26T16:41:29Z (GMT). No. of bitstreams: 2 WOS000169060700056.pdf: 113751 bytes, checksum: 06f1582603b63b81555318ab4b572f3c (MD5) WOS000169060700056.pdf.txt: 43367 bytes, checksum: f4c62408da993f64576f5f90b14d54ae (MD5) Previous issue date: 2001en
dc.identifier.urihttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/79862pt_BR
dc.identifier.urihttp://www.repositorio.unicamp.br/handle/REPOSIP/79862
dc.identifier.urihttp://repositorio.unicamp.br/jspui/handle/REPOSIP/79862-
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