Weikang Dong1, Ruishi Qi1, Tiansheng Liu2, Yi Li3, Ning Li1, Ze Hua1, Zirui Gao4, Shuyuan Zhang3, Kaihui Liu5,6, Jiandong Guo3, and Peng Gao1,6,*
1 International Center for Quantum Materials and Electron Microscopy Laboratory, School of Physics, Peking University, Beijing, 100871 China
2 School of Environment and Safety Engineering, North University of China, Taiyuan, 030051 China
3 Beijing National Laboratory for Condensed Matter Physics and Institute of Physics, Chinese Academy of Sciences, Beijing, 100190 China
4 Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing, 100081 China
5 State Key Laboratory for Mesoscopic Physics, School of Physics, Peking University, Beijing, 100871 China
6 Collaborative Innovation Center of Quantum Matter, Peking University, Beijing, 100871 China