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Scattering of surface state electrons at large organic molecules
Leo Gross1, Francesca Moresco, Letizia Savio
1Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, D-14195 Berlin, Germany.
Physical Review Letters
|August 25, 2004
Abstract:
The scattering of surface state electrons at Lander-type molecules on Cu(111) is investigated by means of scanning tunneling microscope (STM) experiments at low temperature and model calculations. Specific information concerning the electronic interaction of the different internal groups of the molecule with the surface is obtained. Remarkably, the central molecular wire of the molecule, although decoupled from the surface by spacer groups and therefore not visible in STM images, is the main one responsible for scattering of surface state electrons.