1. Department of Physics, Beijing Normal University, Beijing, China
2. Fert Beijing Institute, BDBC, School of Microelectronics, Beihang University, Beijing 100875, China
3. International Center for Quantum Materials, School of Physics, Peking University, Beijing 100871, China
4. Department of Engineering Mechanics & Key Laboratory of Soft Machines and Smart Devices of Zhejiang Province, Zhejiang University, Hangzhou 310012, China
5. School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China