1. Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, Sichuan 611731, China
2. School of Physics and Optoelectronic Engineering, Hainan University, Haikou 570228, China
3. College of Science, Northeast Electric Power University, No. 169 Changchun Road Jilin City 132012, P. R. China
4. Department of Chemistry, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada
5. Department of Physics and Astronomy, Ohio University, Athens, Ohio 45701, United States
6. NHC Key Laboratory of Nuclear Technology Medical Transformation, Mianyang Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Mianyang, Sichuan 621099, China