1. State Key Laboratory of Silicon Materials
2. School of Materials Science and Engineering
3. Zhejiang University
4. Hangzhou 310027
5. China
6. Beijing National Laboratory for Condensed Matter Physics
7. Institute of Physics
8. Chinese Academy of Sciences
9. Beijing 100190
10. Department of Physics and Shenzhen Institute for Quantum Science & Technology
11. Southern University of Science and Technology
12. Shenzhen 518055
13. Department of Materials Science and Engineering, Northwestern University
14. Evanston
15. USA