Phonons in red HgI2 |
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Authors: | S I Skachkov V G Tyuterev |
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Institution: | (1) Siberian Physicotechnical Institute, Tomsk State University, 634050 Tomsk, Russia |
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Abstract: | A critical analysis of existing experimental and theoretical information on the lattice dynamics of the layered crystal α-HgI2 is performed. It is shown that a satisfactory understanding of the character of the interatomic interaction and characteristic
features of the phonon spectrum of this material can be obtained in a simple phenomenological model with eight parameters,
assuming that E
g/B1g
degeneracy of the 29 cm−1 Raman line is of a two-phonon nature.
Fiz. Tverd. Tela (St. Petersburg) 40, 537–541 (March 1998) |
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Keywords: | |
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