• Three impurity cluster in a diatomic linear chain

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    • Keywords


      Impurity clusters; impurity modes; lattice dynamics

    • Abstract


      The modes of vibration of a three impurity cluster in a diatomic linear chain is studied. The configuration of the three impurity atoms is such that two of these go into next nearest neighbour sites in one of the sub-lattices whereas the third occupies the central in between site in the other sub-lattice. New local, gap and inband modes are seen to exist, besides the ones corresponding to the impurity pairs. A new feature which appears is that the frequencies of some of the pair modes remain totally unaffected in the presence of the third impurity atom.

    • Author Affiliations


      P Nayak1 S N Behera1

      1. Institute of Physics, A/105 Saheed Nagar, Bhubaneswar - 751 007
    • Dates

  • Pramana – Journal of Physics | News

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      Posted on July 25, 2019

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