1. Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons and Peter Grünberg Institute, Forschungszentrum Jülich, 52425 Jülich, Germany
2. Donetsk Institute for Physics and Engineering, National Academy of Sciences of Ukraine, 03028 Kyiv, Ukraine
3. Peter Grünberg Institute and Institute for Advanced Simulation, Forschungszentrum Jülich and JARA, 52425 Jülich, Germany
4. RIKEN Center for Emergent Matter Science (CEMS), Wako 351-0198, Japan
5. Institute of Physics, Chinese Academy of Sciences, 100190 Beijing, China
6. Department of Applied Physics, The University of Tokyo, Tokyo 113-8656, Japan