1. School of Microelectronics, Xi’an Jiaotong University, Xi’an 710049, China
2. The Key Lab of Micro-Nano Electronics and System Integration of Xi’an City, Xi’an 710049, China
3. Key Laboratory for Physical Electronics and Devices of the Ministry of Education, Xi’an Jiaotong University, Xi’an 710049, China
4. School of Science, Xi’an Jiaotong University, Xi’an 710049, China
5. Research Institute of Xi’an Jiaotong University, Hangzhou 311215, China