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C-70 adsorbed on Cu(111): Metallic character and molecular orientation
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2002 (English)In: Journal of Chemical Physics, ISSN 0021-9606, E-ISSN 1089-7690, Vol. 116, no 17, 7685-7690 p.Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
2002. Vol. 116, no 17, 7685-7690 p.
Keyword [en]
photoionization cross-sections, electron-phonon interaction, synchrotron-radiation, transport-properties, charge-transfer, solid c70, c-60, surfaces, films, c60
Identifiers
URN: urn:nbn:se:kth:diva-21477DOI: 10.1063/1.1467346ISI: 000175068800037OAI: oai:DiVA.org:kth-21477DiVA: diva2:340175
Note
QC 20100525Available from: 2010-08-10 Created: 2010-08-10 Last updated: 2017-12-12Bibliographically approved

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Luo, Yi

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