1. Department of Energy Conversion and Storage; Technical University of Denmark; Risø Campus 4000 Roskilde Denmark
2. National Laboratory for Condensed Matter Physics and Institute of Physics; Chinese Academy of Sciences; Beijing 100190 China
3. EMAT; University of Antwerp; Groenenborgerlaan 171 2020 Antwerp Belgium
4. Key Laboratory of Magnetic Materials and Devices; Ningbo Institute of Materials Technology and Engineering; Chinese Academy of Sciences; Ningbo 315201 China
5. Center for Quantum Devices; Niels Bohr Institute; University of Copenhagen; Universitetsparken 5 2100 Copenhagen Denmark