1. Fert Beijing Research Institute, School of Microelectronics & Beijing Advanced Innovation Center for Big Data and Brain Computing (BDBC)Beihang University Beijing 100191 China
2. Beihang‐Goertek Joint Microelectronics Institute, Qingdao Research InstituteBeihang University Qingdao 266000 China
3. School of Physics, State Key Laboratory of Crystal MaterialsShandong University Jinan 250100 China
4. State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science & EngineeringTsinghua University Beijing 100084 China
5. State Key Laboratory of Low‐Dimensional Quantum PhysicsDepartment of Physics & Tsinghua‐Foxconn Nanotechnology Research CenterCollaborative Innovation Center of Quantum MatterTsinghua University Beijing 100084 China
6. Institut Jean Lamour, UMR 7198CNRS—Université de Lorraine F‐54000 Nancy France
7. Center for Memory and Recording ResearchUniversity of California San Diego 9500 Gilman Drive La Jolla CA 92093 USA