Regensburg 2007 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe

O: Fachverband Oberflächenphysik

O 17: Poster Session I (Nanostructures at Surfaces; Metal Substrates: Epitaxy and Growth; Methods: Scanning Probe Techniques; Phase Transitions)

O 17.33: Poster

Montag, 26. März 2007, 17:30–20:30, Poster C

Phthalocyanines on Surfaces — •Stefan Kuck, Jens Brede, Francois Vonau, Germar Hoffmann, and Roland Wiesendanger — Institute of Applied Physics, University of Hamburg

Phthalocyanines are aromatic metallo-organic complexes with a single metal atom (M) in its central position and used, e.g., as dye molecules in industrial applications. Phthalocyanines have a planar geometry and are volatile and therefore ideally suited for experiments in ultra high vacuum with local probes. We prepared different Phthalocyanines (M = Cu, Co, Fe) on various substrates from bare metallic surfaces to sandwiched structures with insulating interface layers in an ultra high vacuum environment at a coverage below a monolayer. These molecular systems were then investigated by scanning tunneling microscopy and spectroscopy. The experiments were performed in an home-built variable-temperature scanning tunnling microscope working at temperatures down to 17 K. We will discuss the preparation and the role of the substrates on the orientation and on the electronic molecular states of studied Phthalocyanines.