1. Forschungszentrum Jülich GmbH, Helmholtz Institute Erlangen-Nürnberg for Renewable Energy (IEK-11) , Erlangen , Germany
2. Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Institute of Micro- and Nanostructure Research (IMN) & Center for Nanoanalysis and Electron Microscopy (CENEM) , Erlangen , Germany
3. German Research Center for Geosciences (GFZ) , Potsdam , Germany
4. Freie Universität Berlin, Department of Earth Sciences , Berlin , Germany
5. Fraunhofer Institute for Integrated Systems and Device Technology IISB , Erlangen , Germany