Molecular dynamics of C 60 in superconducting Na 2 CsC 6 o

Abstract

We have measured the low-energy inelastic neutron scattering spectra of superconducting Na2CsC6o in the temperature range 100 350K. Well-defined librational peaks are observed at 2.7(1)meV; their position and width are temperature independent. They survive well above the order-disorder transition at 299 K. A quasielastic feature with a width 1.03(6) meV at an average scattering vector of 1.09 A 1 is observed at 350 K, arising from diffusive motion of the C3o ions. Evidence is found for influence of the Na + ions on the rotational motion of the C3o ions.

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Cite this paper

@inproceedings{Cristofolini2003MolecularDO, title={Molecular dynamics of C 60 in superconducting Na 2 CsC 6 o}, author={Luigi Cristofolini and Konstantinos Vavekis and Kosmas Prassides and Mayumi Kosaka and Ichiro Hirosawa and Katsumi Tanigaki}, year={2003} }