1. Department of Applied Physics and Institution of Energy and Microstructure, Nanjing University of Science and Technology, Nanjing 210094, China
2. State Key Laboratory for Artificial Microstructure & Mesoscopic Physics, School of Physics, Peking University, Beijing 100871, China
3. Collaborative Innovation Center of Quantum Matter, Beijing 100871, China
4. Academy for Advanced Interdisciplinary Studies, Peking University, Beijing 100871, China