Comparison of the Electronic Structures of Two Non-cuprate Layered Transition Metal Oxide Superconductors

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dc.creatorYlvisaker, E. R.
dc.creatorLee, K. -W.
dc.creatorPickett, W. E.
dc.date2005-12-09
dc.date2005-12-11
dc.date.accessioned2026-07-07T06:53:15Z
dc.date.available2026-07-07T06:53:15Z
dc.descriptionComparison is made of the electronic structure of the little-studied layered transition metal oxide LiNbO$_2$ with that of Na$_x$CoO$_2$, which has attracted tremendous interest since superconductivity was discovered in its hydrate. Although the active transition metal $d$ states are quite different due to different crystal fields and band filling, both systems show a strong change of electronic structure with changes in the distance between the transition metal ion layer and the oxygen layers. The niobate is unusual in having a large second-neighbor hopping amplitude, and a nearest neighbor hopping amplitude that is sensitive to the Nb-O separation. Li$_x$NbO$_2$ also presents the attractive simplicity of a single band triangular lattice system with variable carrier concentration that is superconducting.
dc.description5 pages, 3 embedded figures (Proceedings in third Hiroshima international workshop)
dc.identifierhttps://arxiv.org/abs/cond-mat/0512211
dc.identifierhttp://arxiv.org/abs/cond-mat/0512211
dc.identifierPhysica B 383, 63 (2006)
dc.identifierdoi:10.1016/j.physb.2006.03.057
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/105519
dc.subjectSuperconductivity
dc.subjectStrongly Correlated Electrons
dc.titleComparison of the Electronic Structures of Two Non-cuprate Layered Transition Metal Oxide Superconductors
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