1. Department of Physics and Chemistry
2. Liaoning University
3. Shenyang
4. China
5. Beijing Key Laboratory for Magneto-Photoelectrical Composite and Interface Science
6. School of Mathematics and Physics
7. University of Science and Technology Beijing
8. Beijing 100083
9. Key Laboratory of Materials Modification by Laser, Electron, and Ion Beams (Ministry of Education)
10. School of Physics
11. Dalian University of Technology
12. Dalian 116024
13. People's Republic of China