1. State Key Laboratory for Manufacturing Systems Engineering, Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education, Engineering Research Center of Spin Quantum Sensor Chips, Universities of Shaanxi Province, School of Electronic Science and Engineering, Xi’an Jiaotong University 1 , Xi’an 710049, China
2. Department of Electrical and Computer Engineering, National University of Singapore 2 , Singapore 117576
3. Department of Physics, School of Science, Lanzhou University of Technology 3 , Lanzhou 730050, China
4. School of Materials Science and Engineering, Changzhou University 4 , Changzhou, Jiangsu 213164, China