1. Friedrich-Alexander-Universität Erlangen-Nürnberg, Chair Chemistry of Thin Film Materials, IZNF, Cauerstr. 3, 91058 Erlangen, Germany
2. Karlsruhe Institute of Technology, Institute of Functional Interfaces (IFG), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
3. Department of Electrical and Computer Engineering, Old Dominion University, Norfolk, Virginia 23529, United States
4. Applied Research Center at Jefferson Labs, Newport News, Virginia 23606, United States