1. Department of Physics, Southern University of Science and Technology, Shenzhen 518055, China
2. State Key Laboratory for Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China
3. Beijing Academy of Quantum Information Sciences, Beijing 100193, China
4. Materials Characterization and Preparation Center, Southern University of Science and Technology, Shenzhen 518055, China
5. School of Materials Science and Engineering, Dongguan University of Technology, Dongguan 523808, China
6. School of Electronics and Information Engineering, Tiangong University, Tianjin 300387, China