1. Institute for Superconducting and Electronic Materials (ISEM) Australian Institute for Innovative Materials (AIIM) University of Wollongong Innovation Campus North Wollongong NSW 2500 Australia
2. BUAA‐UOW Joint Centre Beihang University Haidian District Beijing 100091 P. R. China
3. Beijing Synchrotron Radiation Facility Institute of High Energy Physics Chinese Academy of Sciences Beijing 100049 P. R. China
4. School of Physics Nankai University Tianjin 300071 P. R. China
5. Electron Microscopy Centre University of Wollongong Wollongong NSW 2525 Australia
6. Center of Materials Physics and Chemistry, and Department of Physics Beihang University Beijing 100191 P. R. China
7. School of Physics Beihang University Haidian District Beijing 100091 P. R. China