Berlin 2012 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 60: [MA] Joint Session "Surface Magnetism II" (jointly with O)
O 60.5: Vortrag
Donnerstag, 29. März 2012, 10:30–10:45, EB 301
Spin resolved measurements of magnetic molecules on surfaces — •Jens Brede1, Régis Decker1, Jörg Schwöbel1, Svetlana Klyatskaya2, Mario Ruben2,3, and Roland Wiesendanger1 — 1Institute of Applied Physics, University of Hamburg, 20355 Hamburg, Germany — 2Institute of Nanotechnology, Karlsruhe Institute of Technology, 76344 Eggenstein-Leopoldshafen, Germany — 3IPCMS, Université de Strasbourg, 67034 Strasbourg, France
The use of magnetic molecules opens a gateway to a flexible design of novel spintronic devices to store, manipulate, and read spin information at nanoscale. Crucial is the precise knowledge of molecular properties at the interface towards an electrode. Progress in this field relies on resolving and understanding the physics at the relevant interfaces. In particular the role of individual molecular constituents and the impact of the atomic environment on molecular properties, determine device relevant parameters, such as conductance and spin polarization. Here, we applied spin-polarized scanning tunneling microscopy to resolve the physics of the molecule-ferromagnet interface. The analysis focuses on different phthalocyanine molecules. The phthalocyanine constitutes of an organic macrocyclic ligand and can be functionalized with various metal ions in order to modify, e.g. the molecular spin state. We will discuss the spin-dependent transport from magnetic surfaces through such molecules.