• A model for the reflectivity spectra of TmTe

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      https://www.ias.ac.in/article/fulltext/pram/046/04/0271-0275

    • Keywords

       

      Lattice dynamics; reflectivity spectra; mixed valence system; structural phase transition; anti-ferroelectric order

    • Abstract

       

      A simple one dimensional diatomic chain model is proposed to explain the reflectivity spectra of TmTe as observed by Wardet al. It is suggested that the system undergoes a structural phase transition of order-disorder type at 4.2 K, where the new phase assumes an anti-ferroelectric type of arrangement of the atoms. The results, we obtained, agree well qualitatively with the experimental results.

    • Author Affiliations

       

      P Nayak1

      1. P. G. Department of Physics, Sambalpur University, Jyotivihar, Burla - 768 019, India
    • Dates

       
  • Pramana – Journal of Physics | News

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