1. National Laboratory of Solid State Microstructures, Jiangsu Provincial Key Laboratory for Nanotechnology, Collaborative Innovation Center of Advanced Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China
2. School of Electronics and Information, Hangzhou Dianzi University, Hangzhou 310018, China
3. Wide Bandgap Semiconductor Technology Disciplines State Key Laboratory, School of Microelectronics, Academy of Advanced Interdisciplinary Research, Xidian University, Xi’an 710071, China
4. Emerging Device and Chip Laboratory, Hangzhou Institute of Technology, Xidian University, Hangzhou 311200, China