Charge transfer between the Au(111) surface and adsorbed C-60: Resonant photoemission and new core-hole decay channels
Författare
Summary, in English
The interaction of C-60 with the Au(111) surface has been investigated using synchrotron radiation-based electron spectroscopy. Resonant photoelectron spectroscopy and autoionization spectroscopy have been used to probe the coupling between the molecule and the substrate. Three distinct high energy spectator Auger features were observed that are only evident for a monolayer of C-60 chemisorbed to the Au (111) surface and not a multilayer or the clean surface itself. Combined with C 1s x-ray absorption and valence band spectra, the data suggest a decay process not previously reported for this system. This is a spectator decay channel involving electrons transferred from the gold substrate to the adsorbed molecule, either in the ground state or during the timescale of the core-hole lifetime. Both possibilities are considered in the interpretation of the results, which support, on balance, a ground state charge transfer. (C) 2010 American Institute of Physics. [doi:10.1063/1.3488299]
Avdelning/ar
Publiceringsår
2010
Språk
Engelska
Publikation/Tidskrift/Serie
Journal of Chemical Physics
Volym
133
Issue
9
Dokumenttyp
Artikel i tidskrift
Förlag
American Institute of Physics (AIP)
Ämne
- Natural Sciences
- Physical Sciences
Nyckelord
- monolayers
- molecule-surface impact
- ground states
- gold
- fullerenes
- chemisorption
- autoionisation
- charge transfer states
- photoelectron spectroscopy
- spectra
- photoelectron
Status
Published
ISBN/ISSN/Övrigt
- ISSN: 0021-9606