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    • Calculations of anharmonic phonon relaxation times

      G P Srivastava

      Solids Volume 6 Issue 1 January 1976 pp 1-18

    • Fulltext

       

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      Permanent link:
      https://www.ias.ac.in/article/fulltext/pram/006/01/0001-0018

    • Keywords

       

      Anharmonicity; lattice thermal conductivity; phonon relaxation

    • Abstract

       

      Anharmonic phonon relaxation times in Ge are calculated using (i) an isotropic continuum model, and (ii) a dispersive model. A complete spectrum of calculated results is presented. Frequency-averaged values for normal- and umklapp-three-phonon relaxation times are also calculated. A comparison is made between our findings and some earlier works, and disagreements are discussed. The results are applied in calculating some results in the theory of lattice thermal conductivity.

    • Author Affiliations

       

      G P Srivastava1

      1. Department of Applied Physics and Electronics, The University of Wales Institute of Science and Technology, King Edward VII Avenue, Cathays Park, Cardiff - CF1 3NU, Wales, U.K.

    • Dates

       
      Published
      January 1976
      Manuscript received
      11 August 1975
      Manuscript revised
      6 October 1975

  • Pramana – Journal of Physics | News

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