Berlin 2015 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 12: Inorganic/Organic Interfaces: Growth II
O 12.8: Vortrag
Montag, 16. März 2015, 16:45–17:00, MA 005
Adsorption of MoMo-Methyl on Cu(111) — •Jobynson Kollamana1, Benjamin Stadtmüller1, Johannes Stöckl1, Anneken Grün2, Manuel Zimmer2, Markus Gerhards2, Mirko Cinchetti1, and Martin Aeschlimann1 — 1Department of Physics and Research Center Optimas — 2Department of Chemistry, University of Kaiserslautern
Metal-organic compounds are promising materials for new types of spintronic devices. While the magnetic and electronic properties of organic molecules in the gas phase are well understood, their behavior on metallic surfaces strongly depends on the interaction in these systems. Therefore, we studied the geometric and electronic properties of (sub)monolayer films of Molybdenum(II) acetate dimer (MoMo-Methyl) adsorbed on Cu(111) by scanning tunneling microscopy and complementary techniques.
For coverages below 1.0ML, the MoMo-Methyl molecules arrange in chains, oriented along high symmetry directions of the Cu(111) surface. Increasing the coverage to one monolayer results in the formation of long range ordered structures with domain sizes of several micrometers.
In addition, the electronic properties of these films were studied by scanning tunneling spectroscopy and photoelectron spectroscopy. Comparing these results to predictions for free MoMo-Methyl molecules allow to reveal the influence of the molecule-substrate interaction on the molecular properties.