1. School of Physics and Wuhan National High Magnetic Field Center, Huazhong University of Science and Technology, Wuhan 430074, China
2. State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics, Tsinghua University, Beijing 100084, China
3. Collaborative Innovation Center of Quantum Matter, Tsinghua University, Beijing 100084, China
4. RIKEN Center for Emergent Matter Science (CEMS), Wako, Saitama 351-0198, Japan
5. Institute for Advanced Study, Tsinghua University, Beijing 100084, China