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Thermal conductivity of YBa2Cu3O7 from 7 K to 260 K

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Abstract

Thermal conductivity of YBa2Cu3O7 has been measured on samples of a few mm thickness. AboveT c thermal conductivity is found to decrease with increase in temperature, pointing towards a contribution to thermal resistivity from three-phonon Umklapp processes. BelowT c 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.

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Authors and Affiliations

  1. Physics Department, Indian Institute of Technology, 600 036, Madras, India

    T R Ravindran, V Sankaranarayanan & R Srinivasan

  2. Inter University Consortium for DAE facilities, 452 001, Indore, India

    R Srinivasan

Authors
  1. T R Ravindran
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  2. V Sankaranarayanan
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  3. R Srinivasan
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Ravindran, T.R., Sankaranarayanan, V. & Srinivasan, R. Thermal conductivity of YBa2Cu3O7 from 7 K to 260 K. Pramana - J. Phys. 39, 109–116 (1992). https://doi.org/10.1007/BF02857500

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  • DOI: https://doi.org/10.1007/BF02857500

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