1. Physics of Energy Department of Physics and Astronomy Vrije Universiteit Amsterdam; De Boelelaan 1081 1081 HV Amsterdam The Netherlands
2. ENERMAT Division Institute of Materials Science & Technology (IMRE) − Physics Faculty University of Havana; Havana Cuba
3. InnovationLab; Speyerer Strasse 4 69115 Heidelberg Germany
4. Institut für Hochfrequenztechnik; Technische Universität Braunschweig; Braunschweig Germany