1. International Center for Quantum Materials, School of Physics, Peking University, Beijing 100871, China.
2. Collaborative Innovation Center of Quantum Matter, Beijing 100871, China.
3. Department of Applied Physics, The Hong Kong Polytechnic University, Kowloon, Hong Kong, China.
4. Center for Advanced Quantum Studies, Department of Physics, Beijing Normal University, Beijing 100875, China.
5. Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology, Wuhan 430074, China.
6. Center of Electron Microscopy, State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China.
7. Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA.
8. Department of Materials Science and Engineering, University of Tennessee, Knoxville, TN 37996, USA.
9. CAS Center for Excellence in Topological Quantum Computation, University of Chinese Academy of Sciences, Beijing 100190, China.