1Department of Materials Engineering and Recycling, Faculty of Materials Science and Technology, VSB-Technical University of Ostrava, 70800 Ostrava, Czech Republic
2Nanotechnology Centre, Centre for Energy and Environmental Technologies, VSB-Technical University of Ostrava, 70800 Ostrava, Czech Republic
3Faculty of Physics, Bielefeld University, Universitätsstraße 25, 33615 Bielefeld, Germany
4Faculty of Mathematics and Physics, Charles University, Ke Karlovu 5, 12116 Prague, Czech Republic
5Faculty of Nuclear Sciences and Physical Engineering, Czech Technical University, Trojanova 13, 12000 Prague, Czech Republic
Maik Gaerner, Judith Bünte, Finn Peters, Inga Ennen, Hermann Tetzlaff, Johannes Fiedler, Tomasz Blachowicz, Luana Caron, Andreas Hütten, Andrea Ehrmann, and Martin Wortmann