1. School of Physics and Technology, Center for Nanoscience and Nanotechnology, and Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education, Wuhan University, Wuhan, Hubei 430072, China
2. Wuhan Institute of Quantum Technology, Wuhan, Hubei 430206, China
3. Key Laboratory of Materials Physics of Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450052, China
4. School of Microelectronics, Wuhan University, Wuhan, Hubei 430072, China