A comparative reflection electron energy loss study of C60 and graphite

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Abstract

Electronic excitations of solid C60 have been studied using the reflection EELS technique with a 0.2 eV energy resolution. A comparison with graphite revealed an overall similarity of the spectral gross features, while significant differences were observed in the fine details, mainly at low loss energies. A similar dominant plasmon was observed in C60 at a slightly shifted energy of 23.2 eV. For C60, in contrast to graphite, a clear energy loss onset was found at 1.7 eV and up to 6 eV six loss peaks were clearly observed. It was found that minima in the loss spectrum fit well with reported optical transitions. This observation supports an interpretation which attributes a significant collective character to the loss peaks.

References (20)

  • P.L. Hansen et al.

    Chem. Phys. Letters

    (1991)
  • S. Larsson et al.

    Chem. Phys. Letters

    (1987)
  • L. Papagno et al.

    Surf. Sci.

    (1983)
  • H.W. Kroto et al.

    Nature

    (1985)
  • W. Kratschmer et al.

    Nature

    (1990)
  • H. Ajie et al.

    J. Phys. Chem.

    (1990)
  • J.H. Weaver et al.

    Phys. Rev. Letters

    (1991)
  • H. Raether

    Excitation of Plasmons and Interband Transitions by Electrons

    Springer Tracts in Modern Physics

    (1980)
  • H. Cohen et al.

    Proceedings of the 6th International Symposium on intercalation compounds

  • H. Cohen, M. Folman, R. Brener, T. Maniv, E. Lifshitz and Z. Esterlit, to be...
There are more references available in the full text version of this article.

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