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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 36.87: Poster

Tuesday, March 15, 2011, 18:30–22:00, P4

Magnetic Fe-porphyrin on superconducting Pb (111) — •Lukas Z. Braun, Benjamin W. Heinrich, Jose I. Pascual, and Katharina J. Franke — Institut für Experimentalphysik, Freie Universität Berlin, Germany

The temperature dependent Fermi-Dirac broadening of electronic states is a physical limit of the energy resolution for Scanning Tunneling Spectroscopy on metal surfaces. A higher energy resolution can be achieved in a superconducting system due to tunneling through the well defined BCS states. Here, we studied Fe(III)-Octaethylporphyrin-Cloride adsorbed on Pb(111) at 4.8 K. At submonolayer coverage, we observed on molecular islands a magnetic fingerprint with submolecular spatial resolution.