1. Advanced Materials Laboratory, State Key Laboratory of Surface Physics, and Department of Physics, Fudan University, Shanghai 200433, China
2. Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
3. Shanghai Research Center for Quantum Sciences, Shanghai 201315, China
4. National Synchrotron Radiation Laboratory and School of Nuclear Science and Technology, University of Science and Technology of China, Hefei 230026, China
5. New Cornerstone Science Laboratory, University of Science and Technology of China, Hefei 230026, China
6. Collaborative Innovation Center of Advanced Microstructures, Nanjing 210093, China