1. Academy of Space Technology, Nanchang University, Nanchang, People’s Republic of China
2. Nanjing National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing, People’s Republic of China
3. Guangxi Key Laboratory for Relativistic Astrophysics, Center on Nanoenergy Research, Guangxi Colleges and Universities Key Laboratory of Novel Energy Materials and Related Technology, College of Physics Science and Technology, Guangxi University, Nanning, P. R. China