Unconventional superconductivity in Na$_{0.35}$CoO$_{2}\cdot$1.3D$_{2}$O and proximity to a magnetically ordered phase

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dc.creatorUemura, Y. J.
dc.creatorRusso, P. L.
dc.creatorSavici, A. T.
dc.creatorWiebe, C. R.
dc.creatorMacDougall, G. J.
dc.creatorLuke, G. M.
dc.creatorMochizuki, M.
dc.creatorYanase, Y.
dc.creatorOgata, M.
dc.creatorFoo, M. L.
dc.creatorCava, R. J.
dc.date2004-03-01
dc.date.accessioned2026-07-07T02:56:44Z
dc.date.available2026-07-07T02:56:44Z
dc.descriptionMuon spin relaxation ($μ$SR) measurements on the new layered cobalt oxide superconductor Na$_{0.35}$CoO$_{2}\cdot$1.3H$_{2}$O and its parent, non-superconducting compounds, have revealed unconventional nature of superconductivity through: (1) a small superfluid energy which implies a surprisingly high effective mass of the charge carriers, approximately 100 times the bare electron mass; (2) the superconducting transition temperature $T_{c}$ scaling with the superfluid energy following the correlations found in high-$T_{c}$ cuprate and some other two-dimensional superconductors; (3) an anisotropic pairing without broken time-reversal symmetry; and (4) the proximity of a magnetically ordered insulating phase at Na$_{0.5}$CoO$_{2}$ below $T_{N}$ = 53 K.
dc.description6 pages 4 figures: Contact Y.J. Uemura, E-mail: tomo@lorentz.phys.columbia.edu
dc.identifierhttps://arxiv.org/abs/cond-mat/0403031
dc.identifierhttp://arxiv.org/abs/cond-mat/0403031
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/23440
dc.subjectSuperconductivity
dc.subjectStrongly Correlated Electrons
dc.titleUnconventional superconductivity in Na$_{0.35}$CoO$_{2}\cdot$1.3D$_{2}$O and proximity to a magnetically ordered phase
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