Title: Raman scattering study of phonon and spin modes in (TMTSF)(2)PF6
Authors: Popovic, ZV ×
Ivanov, VA
Khoung, OP
Nakamura, T
Saito, G
Moshchalkov, Victor #
Issue Date: 2001
Series Title: Synthetic metals: an international journal integrating research and applications on intercalation compounds of graphite, transition metal compounds and quasi one-dimensional conductors vol:124 issue:2-3 pages:421-429
Conference: date:Katholieke Univ Leuven, Vaste Stof Fys Magnetisme Lab, B-3001 Louvain, Belgium; Univ Instelling Antwerp, Dept Natuurkunde, B-2610 Antwerp, Belgium; Hokkaido Univ, Res Inst Elect Sci, Sapporo, Hokkaido 0600812, Japan; Kyoto Univ, Grad Sch Sci, Dept Chem, Kyoto 6068501, Japan
Abstract: We have studied polarized Raman spectra of bis-(tetramethyltetraselenafulvalene)hexafluorophosphate ((TMTSF)(2)PF6) single crystals in the wide spectral and temperature range using different laser energies. We observed and assigned 23 Raman active modes. The carbon C=C in-phase and out-of-phase stretching modes at 1464 and 1602 cm(-1) show strong electron molecular vibration (EMV) coupling. The mode at about 1565 cm(-1) is temperature independent below 50 K due to the methyl group motion freezing. For (TMTSF)(2)PF6 in the spin density wave (SDW) phase for a temperature induced dimensionality 1D (quarter-filled dimerized linear chain with correlated electrons) the spin gapless magnon spectra have been calculated. No evidence of spin-lattice coupling or spin-related modes is found in the Raman spectra in the spin density wave (SDW) phase. (C) 2001 Elsevier Science B.V All rights reserved.
ISSN: 0379-6779
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Solid State Physics and Magnetism Section
× corresponding author
# (joint) last author

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