1. Institute of Microelectronics, Tsinghua University, Beijing 100084, China
2. Beijing National Research Center for Information Science and Technology (BNRist), Tsinghua University, Beijing 100084, China
3. Department of Electronic Engineering, Tsinghua University, Beijing 100084, China
4. Graduate School at Shenzhen, Tsinghua University, Shenzhen 518055, China
5. Fert Beijing Research Institute, BDBC, School of Electronic and Information Engineering, Beihang University, Beijing 100191, China
6. State Key Laboratory of Advanced Materials for Smart Sensing, General Research Institute for Nonferrous Metals, Beijing 100088, China