1. Department of Physics, University of Science and Technology of China, Hefei 230026, Anhui, China
2. The Centre for Physical Experiments, University of Science and Technology of China, Hefei 230026, Anhui, China
3. College of Mathematics and Physics, Chengdu University of Technology, Chengdu 610059, Sichuan, China
4. Institute of Chemical Materials, China Academy of Engineering Physics, Mianyang 621900, Sichuan, China
5. Key Laboratory of Strongly Coupled Quantum Matter Physics, Chinese Academy of Sciences, School of Physical Sciences, University of Science and Technology of China, Hefei 230026, Anhui, China