| Numéro |
J. Phys. IV France
Volume 7, Numéro C2, Avril 1997
Proceedings of the 9th International Conference on X-Ray Absorption Fine Structure
|
|
|---|---|---|
| Page(s) | C2-531 - C2-532 | |
| DOI | https://doi.org/10.1051/jp4/1997085 | |
Proceedings of the 9th International Conference on X-Ray Absorption Fine Structure
J. Phys. IV France 7 (1997) C2-531-C2-532
DOI: 10.1051/jp4/1997085
1 Experimentelle Physik II, Universität Würzburg, Am Hubland, 97074 Würzhurg, Germany
2 3 Physikal. Institut, Universität Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany
© EDP Sciences 1997
J. Phys. IV France 7 (1997) C2-531-C2-532
DOI: 10.1051/jp4/1997085
NEXAFS Investigations on Highly-Ordered Ultrathin Films of DMe-DCNQI on Single Crystal Surfaces
M. Bässler1, R. Fink1, Chr. Buchberger1, D. Gador1, C. Heske1, J. Müller1, P. Väterlein1, J.U. von Schütz2 and E. Umbach11 Experimentelle Physik II, Universität Würzburg, Am Hubland, 97074 Würzhurg, Germany
2 3 Physikal. Institut, Universität Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany
Abstract
DMe-DCNQI forms highly-ordered ultrathin films on various single crystal surfaces. NEXAFS reveals flat lying
molecules for a l investigated film thicknesses (up to 40 layers) on nearly all substrates under investigation (Ag(111). Ag(l00),
Cu(100), Cu(111)). The Cls and Nls NEXAFS spectra of these condensed layers show several very sharp resonances. The
comparison with the quinoide molecules TCNQ and DMe-BQ shows similarities, but the electronic structure is too complicated
to be interpreted m terms of a building block scheme. NEXAFS data of related charge transfer salts consist of fewer and much
broader resonances in accordance with the more delocalized electronic structure of the 'quasimetaUie' salts.
© EDP Sciences 1997