C 1s Autoionization Study of Electron Hopping Rates in Solid C60

P.A. Brühwiler, A.J. Maxwell, P. Rudolf, C.D. Gutleben, B. Wästberg, N. Mårtensson

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We present C 1s autoionization studies of condensed and Xe matrix-isolated C60 molecules which give direct information on electron hopping rates in solid C60 in the presence of a C 1s vacancy. These rates vary dramatically for the first three C 1s absorption excitation maxima in a pattern consistent with strong electron-electron correlations. Hopping associated with the second excited state involves extramolecular screening comparable to the Mott-Hubbard pseudogap predicted for K3C60, suggesting intramolecular correlations do not dominate electron transport in the alkali fullerides.
Original languageEnglish
Article number3721-3724
Number of pages4
JournalPhysical Review Letters
Issue number22
Publication statusPublished - 29-Nov-1993


  • highly correlated electrons

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