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dc.contributor.authorMeskine, Hakim, 1972-eng
dc.contributor.authorPopovic, Zoran S.eng
dc.contributor.authorSatpathy, Sashi Sekhar, 1956-eng
dc.date.issued2002eng
dc.descriptionURL:http://link.aps.org/doi/10.1103/PhysRevB.65.094402 DOI:10.1103/PhysRevB.65.094402eng
dc.description.abstractThe electronic structure of the Ruddlesden-Popper layered perovskite compound Sr3Mn2O7 is studied from density-functional calculations using the linear muffin-tin orbital method. An antiferromagnetic, insulating solution is obtained in agreement with the experiments, with a magnetic moment of about 2.52μB for each Mn atom. The magnetic interactions between the Mn atoms, both within the bilayer and between the bilayers, are shown to arise from superexchange. The intrabilayer interaction involves the three-site Mn-O-Mn superexchange much like the case of the well-known CaMnO3, while the interbilayer exchange, mediated via the longer Mn-O-O-Mn superexchange path, is considerably weaker. Consistent with the layered nature of the compound, we find a strong out-of-plane to in-plane band-mass anisotropy for Sr3Mn2O7(mz*/mx,y*∼10.9 for electrons and ∼4.2 for holes), while for the related compound LaSr3Mn2O7, which is a ferromagnetic metal, we obtain a strong anisotropy in the resistivity ρc/ρab∼40 using kinetic transport theory, in qualitative argument with the experimental value of ∼100.eng
dc.description.sponsorshipThis work was supported by the U. S. Department of Energy under Contract No. DOE FG02-00E0045818.eng
dc.identifier.citationPhys. Rev. B 65, 094402 (2002)eng
dc.identifier.issn1098-0121eng
dc.identifier.urihttp://hdl.handle.net/10355/9437eng
dc.languageEnglisheng
dc.publisherAmerican Physical Societyeng
dc.relation.ispartofcollectionUniversity of Missouri--Columbia. College of Arts and Sciences. Department of Physics and Astronomy. Physics and Astronomy publicationseng
dc.subjectband and itenerant modelseng
dc.subjectstrongly correlated electron systemseng
dc.subjectheavy fermionseng
dc.subject.lcshFermionseng
dc.subject.lcshMagnetism, Band theory ofeng
dc.titleElectronic structure and exchange interaction in the layered perovskite Sr3Mn2O7eng
dc.typeArticleeng


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