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dc.contributor.authorPATTERSON, CHARLESen
dc.date.accessioned2014-07-16T15:14:55Z
dc.date.available2014-07-16T15:14:55Z
dc.date.issued2003en
dc.date.submitted2003en
dc.identifier.citationG. Zheng and C.H. Patterson, Ferromagnetic polarons in La0.5Ca0.5MnO3 and La0.33Ca0.67MnO3, Physical Review B, 67, 2003, 220404-1 - 220404-4en
dc.identifier.otherYen
dc.identifier.urihttp://hdl.handle.net/2262/70392
dc.descriptionPUBLISHEDen
dc.description.abstractUnrestricted Hartree-Fock calculations on La0.5Ca0.5MnO3 and La0.33Ca0.67MnO3 in the full magnetic unit cell show that the magnetic ground states of these compounds consist of 'ferromagnetic molecules' or polarons ordered in herring-bone patterns. Each polaron consists of either three or five Mn ions separated by O- ions with a magnetic moment opposed to those of the Mn ions. Ferromagnetic coupling within the polarons is strong while coupling between them is relatively weak. Magnetic moments on the Mn ions range between 3.8 and 3.9 Bohr magnetons in La0.5Ca0.5MnO3 and moments on the O- ions are -0.7 Bohr magnetons. Each polaron has a net magnetic moment of 7.0 Bohr magnetons, in good agreement with recently reported magnetisation measurements from electron microscopy. The polaronic nature of the electronic structure reported here is obviously related to the Zener polaron model recently proposed for Pr0.6Ca0.4MnO3 on the basis of neutron scattering data.en
dc.format.extent220404-1en
dc.format.extent220404-4en
dc.language.isoenen
dc.relation.ispartofseriesPhysical Review Ben
dc.relation.ispartofseries67en
dc.rightsYen
dc.subjectStrongly Correlated Electronsen
dc.titleFerromagnetic polarons in La0.5Ca0.5MnO3 and La0.33Ca0.67MnO3en
dc.typeJournal Articleen
dc.type.supercollectionscholarly_publicationsen
dc.type.supercollectionrefereed_publicationsen
dc.identifier.peoplefinderurlhttp://people.tcd.ie/cpttrsonen
dc.identifier.rssinternalid17589en
dc.identifier.doihttp://dx.doi.org/10.1103/PhysRevB.67.220404en
dc.rights.ecaccessrightsopenAccess
dc.identifier.orcid_id0000-0003-2187-5642en


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