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    • Keywords

       

      High temperature superconductors; enhancement in thermoelectric power

    • Abstract

       

      The absolute thermopower of single phase YBa2Cu3O7 and Y0.8Er0.2Ba2Cu3O7 has been measured in the range 250 K to the superconducting transition temperature. It is found that these compounds show a large enhancement of thermopower in the range 150 K down toTc. This enhancement shows a steep exponential drop as the temperature increases from the transition temperature. The temperature variation of the enhancement is too steep to be accounted for by electron-phonon or electron-local structural excitation mechanisms.

    • Author Affiliations

       

      R Srinivasan1 2 V Sankaranarayanan1 2 N P Raju1 2 S Natarajan2 U V Varadaraju2 G V Subba Rao2

      1. Department of Physics, Indian Institute of Technology, Madras - 600 036, India
      2. Material Science Research Centre, Indian Institute of Technology, Madras - 600 036, India
    • Dates

       
  • Pramana – Journal of Physics | News

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