Dual electronic states in thermoelectric cobalt oxide

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dc.creatorLimelette, Patrice
dc.creatorHebert, Sylvie
dc.creatorMuguerra, Herve
dc.creatorFresard, Raymond
dc.creatorSimon, Charles
dc.date2008-11-04
dc.date.accessioned2026-07-07T10:15:24Z
dc.date.available2026-07-07T10:15:24Z
dc.descriptionWe investigate the low temperature magnetic field dependence of the resistivity in the thermoelectric misfit cobalt oxide [Bi1.7Ca2O4]0.59CoO2 from 60 K down to 3 K. The scaling of the negative magnetoresistance demonstrates a spin dependent transport mechanism due to a strong Hund's coupling. The inferred microscopic description implies dual electronic states which explain the coexistence between localized and itinerant electrons both contributing to the thermopower. By shedding a new light on the electronic states which lead to a high thermopower, this result likely provides a new potential way to optimize the thermoelectric properties.
dc.identifierhttps://arxiv.org/abs/0811.0498
dc.identifierhttp://arxiv.org/abs/0811.0498
dc.identifierPHYSICAL REVIEW B 77, 235118 (2008)
dc.identifierdoi:10.1103/PhysRevB.77.235118
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/173160
dc.subjectStrongly Correlated Electrons
dc.titleDual electronic states in thermoelectric cobalt oxide
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