1. New
Technologies-Research Center, University of West Bohemia, Univerzitní
8, 306 14 Plzeň, Czech Republic
2. Department
of Chemistry and Center for NanoScience, LMU Munich, Butenandtstraße
11, 81377 Munich, Germany
3. Institute of Physics of the ASCR v. v. i., Cukrovarnická 10, CZ-162 53 Prague, Czech Republic
4. National
Center for Electron Microscopy, Molecular Foundry, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, California 94720 United States
5. Institute
of Materials Chemistry, Vienna University of Technology, Getreidemarkt
9/165-TC, A-1060 Vienna, Austria
6. Max-Planck-Institut für Eisenforschung GmbH, Max-Planck-Straße 1, Düsseldorf, Germany