1. TU DarmstadtGraduate School Energy Science and Engineering Otto-Berndt-Str. 3 64287 Darmstadt Germany
2. TU DarmstadtDepartment of Material and Earth Sciences Otto-Berndt-Str. 3 64287 Darmstadt Germany
3. TU KaiserslauternDepartment of Physics, Biophysics and Medical Physics Erwin-Schrödinger-Strasse 46 67663 Kaiserslautern Germany
4. Freie Universität BerlinBerlin Joint EPR Lab, Department of Physics Arnimallee 14 14195 Berlin Germany
5. TU DarmstadtDepartment of Chemistry Otto-Berndt-Str. 3 64287 Darmstadt Germany
6. Karlsruhe Institute of Technology (KIT)Institute for NanotechnologyCampus North Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
7. Karlsruhe Institute of Technology (KIT)Nano Micro FacilityCampus North Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
8. Deutsches Elektronen-Synchrotron Notkestraße 85 22607 Hamburg Germany