1. Department of Dynamics at Surfaces, Max-Planck-Institute for Biophysical Chemistry, Am Faßerg 11, 37077 Göttingen, Germany
2. Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
3. Institut für Physikalische Chemie, Georg-Georg-August-Universität Göttingen, Tammanstraße 6, 37077 Göttingen, Germany
4. International Center for Advanced Studies of Energy Conversion, Georg-August University of Göttingen, Tammanstraße 6, 37077 Göttingen, Germany