1State Key Laboratory of Spintronics Devices and Technologies, School of Integrated Circuits, Nanjing University, Suzhou 215163, People’s Republic of China
3National 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, People’s Republic of China
4School of Integrated Circuits, Nanjing University, Suzhou 215163, People’s Republic of China
5Research Institute of Superconductor Electronics, School of Electronic Science and Engineering, Nanjing University, Nanjing 210023, People’s Republic of China