Observation of bulk superconductivity in NaxCoO2 · yH2O and NaxCoO2 · yD2O powder and single crystals

R. Jin; B. C. Sales; P. Khalifah; D. Mandrus

Observation of bulk superconductivity in Na_xCoO₂ · yH₂O and Na_xCoO₂ · yD₂O powder and single crystals

R. Jin
, B. C. Sales
, P. Khalifah
, D. Mandrus

Chemistry

Oak Ridge National Laboratory
University of Tennessee

Research output: Contribution to journal › Article › peer-review

91 Scopus citations

Abstract

Sodium-cobalt oxide Na_xCoO₂ was of interest for several years as a potential thermoelectric material, because it exhibits low resistivity coupled with a relatively large thermopower. The crystal structure consists of layers of edge-sharing CoO₆ octahedra perpendicular to the c axis separated by Na layers. This paper reports that bulk superconductivity was observed not only in hydrated Na_0.3CoO₂·yH₂O but also in deuterated Na_0.3CoO₂·yD₂O with T_c∼4.5K.

Original language	English
Article number	217001
Pages (from-to)	217001/1-217001/4
Journal	Physical Review Letters
Volume	91
Issue number	21
State	Published - Nov 21 2003

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abstract = "Sodium-cobalt oxide NaxCoO2 was of interest for several years as a potential thermoelectric material, because it exhibits low resistivity coupled with a relatively large thermopower. The crystal structure consists of layers of edge-sharing CoO6 octahedra perpendicular to the c axis separated by Na layers. This paper reports that bulk superconductivity was observed not only in hydrated Na0.3CoO2·yH2O but also in deuterated Na0.3CoO2·yD2O with Tc∼4.5K.",

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AU - Khalifah, P.

AU - Mandrus, D.

PY - 2003/11/21

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N2 - Sodium-cobalt oxide NaxCoO2 was of interest for several years as a potential thermoelectric material, because it exhibits low resistivity coupled with a relatively large thermopower. The crystal structure consists of layers of edge-sharing CoO6 octahedra perpendicular to the c axis separated by Na layers. This paper reports that bulk superconductivity was observed not only in hydrated Na0.3CoO2·yH2O but also in deuterated Na0.3CoO2·yD2O with Tc∼4.5K.

AB - Sodium-cobalt oxide NaxCoO2 was of interest for several years as a potential thermoelectric material, because it exhibits low resistivity coupled with a relatively large thermopower. The crystal structure consists of layers of edge-sharing CoO6 octahedra perpendicular to the c axis separated by Na layers. This paper reports that bulk superconductivity was observed not only in hydrated Na0.3CoO2·yH2O but also in deuterated Na0.3CoO2·yD2O with Tc∼4.5K.

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Observation of bulk superconductivity in Na_xCoO₂ · yH₂O and Na_xCoO₂ · yD₂O powder and single crystals

Abstract

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