We investigated the interaction of C-70 with the Cu(111) surface using x-ray photoelectron spectroscopy and x-ray absorption spectroscopy. The data point to a net charge transfer from the Cu substrate to the C-70 molecules directly bonded to the Cu atoms, providing a metallic character for a single layer of C-70 (monolayer) adsorbed on this surface. A strong dependence of the x-ray absorption spectra from the light polarization is also observed. By comparing these experimental data with density-functional calculations of the contribution to the x-ray absorption spectral line shape of the five inequivalent carbon atoms in the C-70 cage, we observed that the molecules are mainly oriented with the C5V axis perpendicular to the Cu surface.

C70 adsorbed on Cu(111): metallic character and molecular orientation

MORGANTE, ALBERTO;
2002-01-01

Abstract

We investigated the interaction of C-70 with the Cu(111) surface using x-ray photoelectron spectroscopy and x-ray absorption spectroscopy. The data point to a net charge transfer from the Cu substrate to the C-70 molecules directly bonded to the Cu atoms, providing a metallic character for a single layer of C-70 (monolayer) adsorbed on this surface. A strong dependence of the x-ray absorption spectra from the light polarization is also observed. By comparing these experimental data with density-functional calculations of the contribution to the x-ray absorption spectral line shape of the five inequivalent carbon atoms in the C-70 cage, we observed that the molecules are mainly oriented with the C5V axis perpendicular to the Cu surface.
2002
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11368/1697084
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