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      Permanent link:
      https://www.ias.ac.in/article/fulltext/pram/039/02/0109-0116

    • Keywords

       

      Thermal conductivity; YBCO; three-phonon processes

    • Abstract

       

      Thermal conductivity of YBa2Cu3O7 has been measured on samples of a few mm thickness. AboveTc thermal conductivity is found to decrease with increase in temperature, pointing towards a contribution to thermal resistivity from three-phonon Umklapp processes. BelowTc thermal conductivity increases rapidly before reaching a maximum at about 50 K and then falls towards zero at lower temperatures. The experimental set up is described and results discussed.

    • Author Affiliations

       

      T R Ravindran1 V Sankaranarayanan1 R Srinivasan1 2

      1. Physics Department, Indian Institute of Technology, Madras - 600 036, India
      2. Inter University Consortium for DAE facilities, Indore - 452 001, India
    • Dates

       
  • Pramana – Journal of Physics | News

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      Posted on July 25, 2019

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