1. Jiangsu Provincial Key Laboratory of Advanced Photonic and Electronic Materials, School of Electronic Science and Engineering, Nanjing University, Nanjing 210093, China
2. Department of Physics and Astronomy, University of Missouri, Columbia, Missouri 65211, United States
3. Shenzhen Institute for Quantum Science and Engineering, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
4. Department of Physics, Case Western Reserve University, Cleveland, Ohio 44106, United States
5. New Energy Technology Engineering Laboratory of Jiangsu Provence & School of Science, Nanjing University of Posts and Telecommunications, Nanjing 210023, China
6. Materials Science Division, Argonne National Laboratory, Lemont, Illinois 60439, United States
7. Department of Electrical and Computer Engineering, Auburn University, Auburn, Alabama 36849, United States
8. York−Nanjing Joint Centre (YNJC) for spintronics and nano engineering, Department of Electronic Engineering, The University of York, York YO10 3DD, United Kingdom