1. Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, People’s Republic of China
2. Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China, Hefei 230026, People’s Republic of China
3. High Magnetic Field Laboratory, Chinese Academy of Sciences, Hefei 230031, People’s Republic of China
4. Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031, People’s Republic of China