Physics of the Solid State

, Volume 40, Issue 11, pp 1906–1910

Lattice dynamics of crystalline In4Se3

  • D. M. Bercha
  • K. Z. Rushchanskii
Lattice Dynamics. Phase Transitions

DOI: 10.1134/1.1130684

Cite this article as:
Bercha, D.M. & Rushchanskii, K.Z. Phys. Solid State (1998) 40: 1906. doi:10.1134/1.1130684


Calculations of the phonon spectrum of crystalline In4Se3 in a model of central-pair interactions with neglect of the long-range forces are presented. The model developed contains five unknown parameters, which are determined from experimental values of the elastic moduli without consideration of the internal displacement of the sublattices. The phonon spectrum obtained contains a large number of low-frequency modes, which deform the acoustic branches. Some common features are discovered in the dispersion curves of the electron and phonon spectra.

Copyright information

© American Institute of Physics 1998

Authors and Affiliations

  • D. M. Bercha
    • 1
  • K. Z. Rushchanskii
    • 1
  1. 1.Uzhgorod State UniversityUzhgorodUkraine

Personalised recommendations