1. Division of Superconductivity and Magnetism, Felix Bloch Institute for Solid State Physics, University of Leipzig, Leipzig, Germany
2. Institute of Mineralogy, Crystallography and Materials Science, University of Leipzig, Leipzig, Germany
3. The Department of Chemistry and Institute of Nanotechnology, Bar-Ilan University, Ramat Gan, Israel
4. Bar-Ilan Institute of Nanotechnology and Advanced Materials (BINA), Ramat-Gan, Israel