1. Peter Grünberg Institute 7 Forschungszentrum Juelich GmbH, and Juelich‐Aachen Research Alliance for Fundamentals on Future Information Technology (JARA‐FIT) 52425 Juelich Germany
2. Institute of Electronic Materials (IWE2) RWTH Aachen University and JARA‐FIT 52074 Aachen Germany
3. Department of Surface and Plasma Science Faculty of Mathematics and Physics Charles University V Holesovickach 2 180 00 Prague Czech Republic
4. Peter Grünberg Institute 6 Forschungszentrum Juelich GmbH, and Juelich‐Aachen Research Alliance for Fundamentals on Future Information Technology (JARA‐FIT) 52425 Juelich Germany