1. Key Laboratory of Materials Physics, Institute of Solid State Physics, HFIPS, Chinese Academy of Sciences, Hefei 230031, China
2. University of Science and Technology of China, Hefei 230026, China
3. Institute of Physical Science and Information Technology, Anhui University, Hefei 230601, China
4. School of Physics, Hefei University of Technology, Hefei 230009, China
5. High Magnetic Field Laboratory, HFIPS, Chinese Academy of Sciences, Hefei 230031, China
6. Collaborative Innovation Center of Microstructures, Nanjing University, Nanjing 210093, China