1. Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, People’s Republic of China
2. School of Materials Science and Engineering, Peking University, Beijing 100871, People’s Republic of China
3. Electron Microscopy Laboratory, School of Physics, Peking University, Beijing 100871, People’s Republic of China
4. International Center for Quantum Materials, Peking University, Beijing 100871, People’s Republic of China
5. State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, Liaoning 116023, People’s Republic of China