Long-wavelength phonons inTlSbS2: Raman-active modes
- 15 December 1988
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 38 (17) , 12470-12478
- https://doi.org/10.1103/physrevb.38.12470
Abstract
A low-temperature investigation of the first-order Raman spectrum of 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.
Keywords
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