1. Institute of Super-microstructure and Ultrafast Process in Advanced Materials
2. School of Physics and Electronics
3. Central South University
4. Changsha 410083
5. China
6. School of Material Science and Engineering
7. Guilin University of Electronic Technology
8. Guilin 541004
9. Department of Chemistry
10. Physics and Atmospheric Sciences
11. Jackson State University
12. Jackson
13. USA