Long-Wave High-Frequency Oscillations in Ionic Crystals with Two Atoms in Elementary Cell

  • A. A. Stupka Oles Honchar Dnipropetrovsk National University
Keywords: long-wave oscillations, phonon-polariton, ion plasma frequency

Abstract

Long-wave high-frequency electromagnetic oscillations in an ionic crystal with two atoms in an elementary cell have been considered in the framework of a self-consistent model for free point charges in the electromagnetic field in a dielectric medium. The frequency of longitudinal phonons is shown to equal the ionic plasma frequency divided by the square root of the high-frequency dielectric permittivity. The standard dispersion law for the upper phonon-polariton branch is obtained.

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Published
2018-10-11
How to Cite
Stupka, A. (2018). Long-Wave High-Frequency Oscillations in Ionic Crystals with Two Atoms in Elementary Cell. Ukrainian Journal of Physics, 58(9), 863. https://doi.org/10.15407/ujpe58.09.0863
Section
Solid matter