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dc.contributor.authorSANVITO, STEFANOen
dc.contributor.authorAKANDE, AKINLOLUen
dc.date.accessioned2012-03-07T16:56:28Z
dc.date.available2012-03-07T16:56:28Z
dc.date.issued2012en
dc.date.submitted2012en
dc.identifier.citationA. Akande and S. Sanvito, Persistent current and Drude weight for the one-dimensional Hubbard model from current lattice density functional theory, Journal of Physics: Condensed Matter, 24, 5, 055602, 2012en
dc.identifier.otherYen
dc.identifier.urihttp://hdl.handle.net/2262/62563
dc.descriptionPUBLISHEDen
dc.description.abstractThe Bethe ansatz local density approximation (LDA) to lattice density functional theory (LDFT) for the one-dimensional repulsive Hubbard model is extended to current-LDFT (CLDFT). The transport properties of mesoscopic Hubbard rings threaded by a magnetic flux are then systematically investigated by this scheme. In particular we present calculations of ground state energies, persistent currents and Drude weights for both a repulsive homogeneous and a single impurity Hubbard model. Our results for the ground state energies in the metallic phase compare favorably well with those obtained with numerically accurate many-body techniques. Also the dependence of the persistent currents on the Coulomb and the impurity interaction strength, and on the ring size are all well captured by LDA-CLDFT. Our study demonstrates the value of CLDFT in describing the transport properties of one-dimensional correlated electron systems. As its computational overheads are rather modest, we propose this method as a tool for studying problems where both disorder and interaction are present.en
dc.description.sponsorshipWe thank N Baadji, I Rungger and V L Campo for useful discussions. This work is supported by the Science Foundation of Ireland under the grants SFI05/RFP/PHY0062 and 07/IN.1/I945. Computational resources have been provided by the HEA IITAC project managed by the Trinity Center for High Performance Computing and by ICHEC.en
dc.language.isoenen
dc.relation.ispartofseriesJournal of Physics: Condensed Matteren
dc.relation.ispartofseries24en
dc.relation.ispartofseries5, 055602en
dc.rightsYen
dc.subjectCondensed matter physicsen
dc.subjectThin filmsen
dc.titlePersistent current and Drude weight for the one-dimensional Hubbard model from current lattice density functional theoryen
dc.typeJournal Articleen
dc.type.supercollectionscholarly_publicationsen
dc.type.supercollectionrefereed_publicationsen
dc.identifier.peoplefinderurlhttp://people.tcd.ie/sanvitosen
dc.identifier.peoplefinderurlhttp://people.tcd.ie/aakandeen
dc.identifier.rssinternalid78582en
dc.subject.TCDThemeNanoscience & Materialsen
dc.identifier.rssurihttp://dx.doi.org/10.1088/0953-8984/24/5/055602en
dc.contributor.sponsorScience Foundation Ireland (SFI)en
dc.contributor.sponsorGrantNumberSFI05/RFP/PHY0062en
dc.contributor.sponsorScience Foundation Ireland (SFI)en
dc.contributor.sponsorGrantNumber07/IN.1/I945en


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