1. Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu 610054, China
2. Physics and Space Science College, China West Normal University, Nanchong 637002, China
3. College of Optoelectronic Technology, Chengdu University of Information Technology, Chengdu 610225, China
4. School of Materials and Energy, University of Electronic Science and Technology of China, Chengdu 611731, China