Raman Scattering From TMTSF-Salts |
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| Authors: | K Iwahana H Kuzmany F Wudl E Aharon-Shalom |
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| Institution: | 1. Cornell University , Ithaca, NY, 14853;2. Bell Laboratories , Murray Hill, NJ, 07974 |
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| Abstract: | Abstract Experimental results for Raman scattering from TSeF, TMTSF-D12, (TMTSF)2PF6 and (TMTSF)2AsF6 excited with blue-green laser light at liquid nitrogen temperature are reported. A strong resonance effect for excitation of TMTSF with 4579 Å was observed and an assignment for the ag modes was obtained by comparison with results from TTF. Methyl group modes were identified at 328 cm?1, 472 cm?1 and 916 cm?1, respectively. Charging the TMTSF molecule resulted in a strong frequency shift of -122 cm?1 and -76 cm?1 for the agu2 mode, respectively. A study of the temperature dependence of the scattering from molecular modes between 2 K and 300 K did not reveal any correlation with the phase transitions in the conducting compounds. |
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| Keywords: | nematic liquid crystal oscillatory flow surface viscosity |
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