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High Pressure Phonon Dispersion of Zinc Chalcogenides and the Metallic Transition

  • B. A. Weinstein

Abstract

The crystal potential responsible for solid cohesion is manifest through the phonon energies. For covalently bonded and partially covalent substances no simple crystal potential has yet been found. Thus, knowledge of the effect of high pressure on the phonon dispersion is important to an understanding in this area. Among other things, it is related to the stability regimes of various structural polytypes. Furthermore, such knowledge can be used to test the microscopic theories presently under development [1,2], which derive the phonon energies from the electronic eigenstates, by requiring that these theories reproduce the phonon dispersion not only at 1 atm, but at an arbitrary pressure. Therefore, a clear and detailed experimental picture of the phonon dispersion under pressure is needed.

Keywords

Zone Boundary Phonon Energy Phonon Dispersion Difference Mode Measure Raman Spectrum 
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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Copyright information

© Springer Science+Business Media New York 1979

Authors and Affiliations

  • B. A. Weinstein
    • 1
  1. 1.Purdue UniversityWest LafayetteUSA

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