1. School of Physics
2. Anyang Normal University
3. Anyang 455000
4. China
5. Physics and Electronic Engineering College
6. Nanyang Normal University
7. Nanyang 473061
8. Department of Physics and Electronic Science
9. Zhengzhou Normal University
10. Zhengzhou 450044
11. College of Physics and Materials Science
12. Henan Normal University
13. Xinxiang 453007