Long-wavelength phonons in TlSbS2: Raman-active modes

P. Rouquette, J. Allegre, J. Camassel, J. Pascual

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A low-temperature investigation of the first-order Raman spectrum of TlSbS2 has been performed, and all Raman modes predicted by group-theory arguments have been resolved. Marked selection rules have been found which are not usual for a crystal with triclinic symmetry. Also, a fine structure, indicative of Davydov-like partners, has been found at low temperatures. This behavior is discussed in terms of the most important chains that underlie the crystal structure. © 1988 The American Physical Society.
Original languageEnglish
Pages (from-to)12470-12478
JournalPhysical Review B
Issue number17
Publication statusPublished - 1 Jan 1988

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