Electronic Structures of Na in $Na_xCoO_2$

ORAL

Abstract

Sodium cobalt oxides ($Na_xCoO_2$) have attracted renewed because of their exceptionally large thermoelectric power recent discovery of superconductivity in their hydrated counterparts. In order to investigate the dependence on th doping-concentration for the electronic structures, we hav carried out a series of LDA+U Ab initio calculation on sod cobalt oxides ($Na_xCoO_2$) of various dopings. The calcul results were compared with experimental results of polarization-dependent soft x-ray absorption spectroscopy.

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Authors

  • Paoan Lin

    • Institute of Physics, Academia Sinica, Taiwan

  • D. J. Huang

    • National Synchrotron Radiation Research Center, Taiwan
    • Natinal Symchrotron Radiation Research Center

  • Horng-Tay Jeng

    • Institute of Physics, Academia Sinica, Taiwan

  • Chen-Shiung Hsue

    • Department of Physics, National Tsing Hua University, Taiwan