THE STRUCTURAL AND VIBRATIONAL PROPERTIES OFC60ADSORBED ON THE GRAPHITE(0001) SURFACE

M.R.C. Hunt and R.E. Palmer
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M.R.C. Hunt: Department of Physics, Cavendish Laboratory, University of Cambridge, Madingley Road, Cambridge, CB3 OHE, UK
R.E. Palmer: Department of Physics, Cavendish Laboratory, University of Cambridge, Madingley Road, Cambridge, CB3 OHE, UK

Surface Review and Letters (SRL), 1996, vol. 03, issue 01, 937-942

Abstract: The exciting opportunities promised by the unique properties ofC60can only be fully exploited if the growth and properties of this material can be understood. To this end we have carried out a study of the structural and vibrational properties ofC60adsorbed on the graphite(0001) surface. We observed a novel high-order periodicity at monolayer coverages which indicates that even the weak corrugation potential of the surface can perturb the geometry of the overlayer. Vibrational spectra show a low-energy resonance in the inelastic scattering cross section which we correlate with a resonance feature observed in the electron attachment cross section ofC60. The lack of a measurable perturbation in the resonance upon going from multilayer to monolayer coverage indicates that a weak physisorption bond exists between the molecules and the surface.

Date: 1996
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DOI: 10.1142/S0218625X96001686

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