1. ABB Corporate Research Center; Starowislna 13A 31-038 Kraków Poland
2. Faculty of Physics and Applied Computer Science, Department of Solid State Physics; AGH University of Science and Technology; Mickiewicza 30 30-059 Kraków Poland
3. Laboratoire des Multimatériaux et Interfaces, UMR 5615 CNRS - Université Lyon 1; Université de Lyon; 43 bd du 11 Novembre 1918 69622 Villeurbanne Cedex France