Sundar, C. S. ; Gupta, R. ; Premila, M. ; Bharathi, A. ; Hariharan, Y. ; Sood, A. K. (2002) Temperature dependence of infrared and Raman modes in polymeric RbC60 Journal of Physics and Chemistry of Solids, 63 (9). pp. 1639-1646. ISSN 0022-3697
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Official URL: http://www.sciencedirect.com/science/article/pii/S...
Related URL: http://dx.doi.org/10.1016/S0022-3697(01)00248-7
Abstract
Temperature dependence of the intra-molecular vibrational modes of C60 in the quasi-1D polymeric RbC60, across the low temperature transition at ~50 K, has been probed through infrared (IR) and Raman spectroscopies. With the lowering of temperature, the split IR modes of RbC60 are seen to harden but below 50 K a small but definitive signature of an anomalous softening is observed. In addition, the background IR transmission shows an increase below 50 K with the opening of a well defined gap in the electronic spectrum. The implications of these results, along with those of Raman measurements, are discussed in terms of the interaction of intra-molecular phonons with electrons and spin excitations in the system.
Item Type: | Article |
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Source: | Copyright of this article belongs to Elsevier Science. |
Keywords: | A. Fullerenes; C. Infrared Spectroscopy; C. Raman Spectroscopy; D. Phonons |
ID Code: | 50195 |
Deposited On: | 22 Jul 2011 13:52 |
Last Modified: | 22 Jul 2011 13:52 |
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