1. Catalysts and Electrocatalysts, Eduard-Zintl-Institute of Inorganic and Physical Chemistry, Department of Chemistry, Technical University Darmstadt, Otto-Berndt-Str. 3, 64287 Darmstadt, Germany
2. Quantum Chemistry, Eduard-Zintl-Institute of Inorganic and Physical Chemistry, Department of Chemistry, Technical University Darmstadt, Peter-Grünberg-Str. 4, 64287 Darmstadt, Germany
3. Bar-Ilan Center for Nanotechnology and Advanced Materials and the Department of Chemistry, Bar-Ilan University, Ramat-Gan 529002, Israel
4. Surface Science Division, Institute of Materials Science, Department of Materials and Earth Sciences, Technical University Darmstadt, Otto-Berndt-Str. 3, 64287 Darmstadt, Germany
5. Deutsches Elektronen-Synchrotron, Notkestraße 85, 22607 Hamburg, Germany
6. Department of Physics, University of Kaiserslautern-Landau, Erwin-Schrödinger Straße 56, 67663 Kaiserslautern, Germany