1. School of Physical Science and Technology
2. Key Laboratory of Advanced Technologies of Materials
3. Ministry of Education of China
4. Southwest Jiaotong University
5. Chengdu 610031
6. School of Optoelectronic Technology
7. Chengdu University of Information Technology
8. Chengdu 610225
9. China
10. State Key Lab of Superhard Materials
11. College of Physics
12. Jilin University
13. Changchun 130012
14. Department of Earth Sciences
15. University of Cambridge
16. Cambridge
17. UK
18. Department of Chemistry
19. University of Puerto Rico
20. San Juan
21. USA