1. Fert Beijing Institute, School of Microelectronics, Beijing Advanced Innovation Center for Big Data and Brain Computing, Beihang University, Beijing 100191, China
2. Institute of Physics, Station 3, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne-EPFL, Switzerland
3. Robinson Research Institute, Victoria University of Wellington, P.O. Box 600, Wellington 6140, New Zealand
4. Institute for Quantum Science and Engineering and Department of Physics, Southern University of Science and Technology, Shenzhen 518055, China
5. Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100190, China
6. The MacDiarmid Institute for Advanced Materials and Nanotechnology, Wellington 6140, New Zealand