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The In_{4}Se_{3} Crystal as a Three-Dimensional Imitative Model of Phenomena in One-Dimensional Crystals

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Bercha D., Sznajder M., Bercha A., Kharkhalis L., Rushchanskii K.
Acta Physica Polonica A
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1998
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vol. 94
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issue 2
250-254
EN
For three-dimensional charge carriers described by the dispersion law with quartic terms of the wave vector, the density of states function similar as in the one-dimensional case was determined. This similarity allows the Pekar and Dejgen condenson states in the continuum approximation to exist. The calculated phonon spectrum reveals optical vibrations of a very low frequency, which favours the electron-phonon interaction and creation of the condenson states.
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