1. Institute of Nanoscience and Nanotechnology National Center for Scientific Research DEMOKRITOS Neapoleos 27 and Patriarchou Gigoriou Str. 15341 Athens Attiki Greece
2. Department of Physics National Kapodistrian University of Athens Athens Greece
3. Institute on Functional Oxides for Energy‐Efficient IT (IFOX) Helmholtz‐Zentrum Berlin für Materialien und Energie Hahn‐Meitner Platz 1 14109 Berlin Germany
4. National Institute of Materials Physics Atomistilor 405A Magurele Romania
5. Leibniz‐Institut für Kristallzüchtung (IKZ) Max‐Born‐Str. 2 12489 Berlin Germany
6. Physical Chemistry Freie Universität Berlin Arnimallee 22 14195 Berlin Germany