1. Shanghai Key Laboratory of High Temperature Superconductors, Physics Department, Shanghai University, Shanghai 200444, People's Republic of China
2. Shanghai Creative Superconductor Technologies Co., Ltd, Shanghai 201401, People's Republic of China
3. Institute of Modern Physics, Chinese Academy of Sciences (CAS), Lanzhou 730000, People's Republic of China
4. School of Nuclear Science and Technology, University of Chinese Academy of Sciences (UCAS), Beijing 100049, People's Republic of China