1. Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China
2. School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, People’s Republic of China
3. International Center for Quantum Materials, and Electron Microscopy Laboratory, School of Physics, Peking University, Beijing 100871, People’s Republic of China
4. Songshan Lake Materials Laboratory, Dongguan, Guangdong 523000, People’s Republic of China