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O: Fachverband Oberflächenphysik
O 36: Poster Session II (Metals; Nanostructures at surfaces; Surface or interface magnetism; Spin-Orbit Interaction at Surfaces; Electron and spin dynamics; Surface dynamics; Methods; Theory and computation of electronic structure)
O 36.33: Poster
Tuesday, March 15, 2011, 18:30–22:00, P4
Structural transformation of the PTCDA/Ag(110) interface induced by potassium adsorption — •Martin Willenbockel1, Giuseppe Mercurio1, Oliver Bauer2, Benjamin Fiedler2, Christian Weiss1, Ruslan Temirov1, Sergey Subach1, Moritz Sokolowski2, and Stefan Tautz1 — 1Peter Grünberg Institut (PGI-3), Forschungszentrum Jülich, 52425 Jülich, Germany and JARA - Fundamentals of Future Information Technology — 2Institut für Physikalische und Theoretische Chemie, Universität Bonn, Wegelerstr. 12, 53115 Bonn, Germany
Using X-ray photoemission spectroscopy, scanning tunneling microscopy and low energy electron diffraction, the transformation of PTCDA/Ag(110) after deposition of potassium and subsequent annealing is studied. The initially planar molecule/metal interface undergoes significant structural modification: upon annealing, potassium atoms intercalate under the molecular layer partially unbinding PTCDA molecules from silver. This induces significant reorganization of the top-most silver layer resulting in the formation of silver terrace trains with K+PTCDA chains on top.