| Affiliation: | 1. Department of Applied Physics, Chongqing University of Technology, Chongqing 400054, China;2. Department of Physics and Electronic Information, China West Normal University, Nanchong 637002, China;3. Department of Electronic Information and Automation, Chongqing University of Technology, Chongqing 400054, China;4. International Centre for Materials Physics, Chinese Academy of Sciences, Shenyang 110016, China;5. Key Laboratory for Optoelectronic Technology and Systems, Ministry of Education, College of Optoelectronic Engineering, Chongqing University, Chongqing 400044, China |
