1. CAS Key Laboratory of Nanophotonic Materials and Devices CAS Key Laboratory of Standardization and Measurement for Nanotechnology CAS Center for Excellence in Nanoscience National Center for Nanoscience and Technology Beijing 100190 China
2. Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences Beijing 100049 China
3. Electron Microscopy Laboratory School of Physics Peking University Beijing 100871 China
4. School of Physics Wuhan National Laboratory for Optoelectronics (WNLO) Huazhong University of Science and Technology (HUST) Wuhan 430074 P. R. China
5. International Center for Quantum Materials Interdisciplinary Institute of Light‐Element Quantum Materials and Research Center for Light‐Element Advanced Materials Collaborative Innovation Center of Quantum Matter Beijing 100871 China