1. Department of Physics and State Key Laboratory of Low-Dimensional Quantum Physics
2. Tsinghua University
3. Beijing 100084
4. P. R. China
5. School of Materials Science and Engineering
6. Beihang University
7. Beijing 100191
8. Institute of Nuclear Physics and Chemistry
9. China Academy of Engineering Physics
10. Mianyang
11. Collaborative Innovation Center of Quantum Matter