Berlin 2008 – wissenschaftliches Programm
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SYSA: Symposium Tayloring Organic Interfaces: Molecular Structures and Applications
SYSA 5: Poster Session SYSA
SYSA 5.47: Poster
Dienstag, 26. Februar 2008, 14:30–20:00, Poster A
STM/NEXAFS INVESTIGATIONS OF METALLO-PHTHALOCYANINES GROWN ON FERROMAGNETIC Co(001) THIN FILMS — Kathrin Müller1, Kathrin Heimer2, Oleksiy Andreyev2, Andreas Scheybal1, Felix Schmitt2, Jens Sauther2, Rolf Bertschinger1, Jan Peter Wüstenberg2, Kim Timor1, •Stefan Lach2, Thomas Jung1, Martin Aeschlimann2, and Christiane Ziegler2 — 1Paul Scherrer Institut, Lab. for Micro&Nanostructures CH-5232 Villigen PSI — 2TU Kaiserslautern Department of Physics D-67663 Kaiserslautern
Due to their chemical tunability and weak spin-orbit coupling organic semiconducting materials are promising candidates for future spintronic devices.
This motivates detailed investigations of the interface between organic-semiconductors like metallo-phthalocyanines and ferromagnetic metallic substrates. Here, a STM/NEXAFS study of the morphology of submonolayer up to multilayer CuPc and FePc thin films on epitaxially grown ferromagnetic Co(001) films will be presented. Cobalt was chosen for its high degree of spin polarization at the Fermi level. The STM data reveal that for monolayer coverages the morphology on smooth Co films is different for the two chosen metallo- phthalocyanines. This difference in morphology will be compared to data relevant for spintronic devices such as the spin polarization at the surface.