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Temperature dependence of infrared and Raman modes in polymeric RbC60

Gupta, R and Sundar, C. S. and Premila, M and Bharathi, A and Hariharan, Y and 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.

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Abstract

Temperature dependence of the intra-molecular vibrational modes of C60 in the quasi-1D polymeric RbC60, across the low temperature transition at not, vert, similar50 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
Subjects:Material Science > Functional and hybrid materials
Material Science > Tunnelling and microscopic phenomena
Material Science > Nanofabrication processes and tools
Analytical Science > Nanotechnology for sensing and actuating
Material Science > Nanochemistry
Physical Science > Photonics
Physical Science > Nanophysics
Physical Science > Nano objects
Physical Science > Quantum phenomena
Material Science > Nanostructured materials
Divisions:Faculty of Engineering, Science and Mathematics > School of Physics
Faculty of Engineering, Science and Mathematics > School of Chemistry
ID Code:4362
Deposited By:JNCASR
Deposited On:03 Apr 2009 06:34
Last Modified:03 Apr 2009 12:29

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