1. Laboratory of Advanced
Materials (MOE), School of Materials Science and Engineering, Tsinghua University, Beijing 100084, People’s Republic of China
2. Center for Brain Inspired
Computing Research (CBICR), Tsinghua University, Beijing 100084, People’s Republic of China
3. Key Laboratory of Microelectronic Devices & Integrated Technology, Institute of Microelectronics, Chinese Academy of Sciences, Beijing 100029, People’s Republic of China