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.
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Fiz. Tverd. Tela (St. Petersburg) 40, 537–541 (March 1998)
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Skachkov, S.I., Tyuterev, V.G. Phonons in red HgI2 . Phys. Solid State 40, 494–498 (1998). https://doi.org/10.1134/1.1130256
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DOI: https://doi.org/10.1134/1.1130256