Regensburg 2010 – wissenschaftliches Programm
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DS: Fachverband Dünne Schichten
DS 29: Poster: Molecular Spintronics, Biomolecular and Functional Organic Layers, Organic Electronics and Photovoltaics, Plasmonics and Nanophotonics, Organic Thin Films, Nanoengineered Thin Films, Thin Film Characterisation,
DS 29.56: Poster
Mittwoch, 24. März 2010, 15:00–17:30, Poster A
Determination of the spin and orbital ground state of transition metal phthalocyanines — •Thomas Kroll1, Roberto Kraus1, Mandy Grobosch1, Olga V. Molodtsova1, Victor Yu. Aristov1,2, Patrick Hoffmann3, and Martin Knupfer1 — 1IFW Dresden, P.O. Box 270016, D-01171 Dresden, Germany — 2Institute of Solid State Physics, Russian Academy of Sciences, Chernogolovka, Moscow distr. 142432, Russia — 3Helmholtz-Zentrum Berlin für Materialien und Energie, Bessy II, Berlin, Germany
The electronic structure of magnetic molecular materials such as metal phthalocyanines (MPc) systems has been investigated by means of soft X-ray absorption, photoemission and resonant photoemission spectroscopy.
In these systems, a transition metal ion is incorpaorated into the center of a phthalocyanine complex, that determines all magnetic properties of the molecule. Even though various suggestions on the ground state structure of these MPc's have been proposed, no satisfactory picture could be derived, yet. Only the corresponding spin is well known, including the unusual intermediate spin state for FePc and MnPc. With the help of these spectroscopic methods for different polarisation and temperatures, we shed a brighter light on the electronic structure of various MPc's and, together with theoretical calculations, clarify the exact structure of their ground and excited states.