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Extra- and intramolecular vibrations of K-doped C 60 monolayers adsorbed on Ag(111) and Cu(111) have been studied by high-resolution electron energy loss spectroscopy (HREELS) in reflection geometry. Intramolecular modes are used to assess the electronic occupancy of C 60 , which is increased by intercalating K atoms. Regardless of the charge donated by the substrate, extramolecular...
Fullerene and azafullerene films were studied by electron energy loss spectroscopy in reflection geometry. Compared to C 60 , (C 59 N) 2 multilayers show additional vibrational modes that are characteristic of the dimer structure. The (C 59 N) 2 is semiconductor-like and giant optically allowed excitonic transitions are found in the gap in drastic contrast with...
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