New low-temperature phases in NaxCoO2 linked to quantum criticality

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dc.creatorRivadulla, F.
dc.creatorBanobre-Lopez, M.
dc.creatorGarcia-Hernandez, M.
dc.creatorLopez-Quintela, M. A.
dc.creatorRivas, J.
dc.date2005-03-01
dc.date.accessioned2026-07-07T03:03:57Z
dc.date.available2026-07-07T03:03:57Z
dc.descriptionNew electronic phases have been identified and placed in the (T,H) phase diagram of metallic NaxCoO2. At low Na-content (x = 0.36), the magnetic susceptibility diverges with a power law T^(-n), n<1, and shows (T,H) scaling, indicating the proximity to a magnetic quantum phase transition. At high Na contents (x = 0.6) the mass of the quasiparticles does never diverge, but renormalizes and becomes strongly field dependent at low temperatures, forming a heavy Fermi-Liquid. Our results make superconducting NaxCoO2 a clear candidate for magnetically mediated pairing.
dc.identifierhttps://arxiv.org/abs/cond-mat/0503010
dc.identifierhttp://arxiv.org/abs/cond-mat/0503010
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/25949
dc.subjectStrongly Correlated Electrons
dc.subjectSuperconductivity
dc.titleNew low-temperature phases in NaxCoO2 linked to quantum criticality
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