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dc.contributor.authorNanda, B. R. K.eng
dc.contributor.authorSatpathy, Sashi Sekhar, 1956-eng
dc.date.issued2010eng
dc.descriptionhttp://arxiv.org/abs/1012.0889eng
dc.description.abstractFrom a mean-field solution of the Hubbard-Holstein model, we show that a rich variety of different electronic phases can result at the interface between two polar materials such as LaAlO$_3$/SrTiO$_3$. Depending on the strengths of the various competing interactions, viz., the electronic kinetic energy, electron-phonon interaction, Coulomb energy, and electronic screening strength, the electrons could (i) either be strongly confined to the interface forming a 2D metallic or an insulating phase, (ii) spread deeper into the bulk making a 3D phase, or (iii) become localized at individual sites forming a Jahn-Teller polaronic phase. In the polaronic phase, the Coulomb interaction could lead to unpaired electrons resulting in magnetic Kondo centers. Under appropriate conditions, electronic phase separation may also occur resulting in the coexistence of metallic and insulating regions at the interface.eng
dc.description.sponsorshipThis work was supported by the U. S. Department of Energy through Grant No. DE-FG02-00ER45818.eng
dc.identifier.citationarXiv:1012.0889v1eng
dc.identifier.urihttp://hdl.handle.net/10355/9310eng
dc.languageEnglisheng
dc.publisherarXiveng
dc.relation.ispartofcollectionUniversity of Missouri--Columbia. College of Arts and Sciences. Department of Physics and Astronomy. Physics and Astronomy publicationseng
dc.subjectelectronic phaseseng
dc.subject.lcshCondensed mattereng
dc.subject.lcshMaterials scienceeng
dc.titleElectronic Phases and Phase Separation in the Hubbard-Holstein Model of a Polar Interfaceeng
dc.typeArticleeng


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