Specific Heat and Superfluid Density for Possible Two Different Superconducting States in NaxCoO2.yH2O

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dc.creatorMochizuki, Masahito
dc.creatorYuan, H. Q.
dc.creatorOgata, Masao
dc.date2006-12-04
dc.date2006-12-05
dc.date.accessioned2026-07-07T07:43:49Z
dc.date.available2026-07-07T07:43:49Z
dc.descriptionSeveral thermodynamic measurements for the cobaltate superconductor, NaxCoO2.yH2O, have so far provided results inconsistent with each other. In order to solve the discrepancies, we microscopically calculate the temperature dependences of specific heat and superfluid density for this superconductor. We show that two distinct specific-heat data from Oeschler et al. and Jin et al. are reproduced, respectively, for the extended s-wave state and the p-wave state. Two different superfluid-density data are also reproduced for each case. These support our recent proposal of possible two different pairing states in this material. In addition, we discuss the experimentally proposed large residual Sommerfeld coefficient and extremely huge effective carrier mass.
dc.description5 pages, 4 figures, Submitted to J. Phys. Soc. Jpn
dc.identifierhttps://arxiv.org/abs/cond-mat/0612071
dc.identifierhttp://arxiv.org/abs/cond-mat/0612071
dc.identifierJ. Phys. Soc. Jpn. 76 (2007) 023702
dc.identifierdoi:10.1143/JPSJ.76.023702
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/122974
dc.subjectSuperconductivity
dc.subjectStrongly Correlated Electrons
dc.titleSpecific Heat and Superfluid Density for Possible Two Different Superconducting States in NaxCoO2.yH2O
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