1. State Key Laboratory of Superhard Materials
2. Jilin University
3. Changchun
4. People's Republic of China
5. Beijing National Laboratory for Condensed Matter Physics
6. Institute of Physics
7. Chinese Academy of Sciences
8. Beijing 100190
9. China
10. Department of Physics and Chemistry
11. College of Physics
12. Beihua University
13. Jilin 132013
14. PR China
15. College of Electronic Science and Engineering
16. Changchun 130012