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Lattice dynamics and phase transitions in IV–VI semiconducting compounds

  • Annette Bussmann-Holder
  • Winfried Kress
  • Heinz Bilz
  • Ulrich Schröder
6. Lattice Dynamics and Phase Transition
Part of the Lecture Notes in Physics book series (LNP, volume 152)

Abstract

The lattice dynamics of semiconducting IV–VI compounds are treated on the basis of a three dimensional highly non-linear shell model. Two different types of exact solutions are obtained from this model which are phonons and non-linear periodic excitations (periodons). For SnTe the dispersion curves and the amplitudes of the periodon solutions are presented. It is shown that the phonon-periodon-coupling is the origin of the phonon anomalies in SnTe at q=π/3a and even more pronounced in K2SeO4 at q=2π/3a.

Keywords

Lattice Dynamic Acoustic Phonon Motion Split Tural Phase Transition Phonon Anomaly 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

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Copyright information

© Springer-Verlag 1982

Authors and Affiliations

  • Annette Bussmann-Holder
    • 1
  • Winfried Kress
    • 1
  • Heinz Bilz
    • 1
  • Ulrich Schröder
    • 2
  1. 1.Max-Planck-Institut für FestkörperforschungStuttgart-80Germany
  2. 2.Inst. f. Theor. PhysikUniversität RegensburgRegensburgGermany

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