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      https://www.ias.ac.in/article/fulltext/boms/014/03/0827-0830

    • Keywords

       

      Thermopower; linear variation; exponential enhancement; two-band model

    • Abstract

       

      Single-phase 2122 samples of thallium and bismuth superconductors were made by the precursor matrix method. The thermopower of these samples was measured in the temperature range 250 K-Tc. The thermopower was positive and decreased linearly with increasing temperature aboveTc (onset). The exponential enhancement of thermopower seen in the undoped and doped YBCO was not observed in these samples. The linear variation of thermopower can be explained on the basis of either a two-band model or a narrow band model.

    • Author Affiliations

       

      V Vijayashree1 C K Subramaniam1 R Srinivasan1 I K Gopalakrishnan1 2 PVPSS Sastry1 2 J V Yakhmi1 2 R M Iyer1 2

      1. Department of Physics, Indian Institute of Technology, Madras - 600 036, India
      2. Chemical Group, Bhabha Atomic Research Centre, Trombay, Bombay - 400 085, India
    • Dates

       
  • Bulletin of Materials Science | News

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