1. Wuhan National High Magnetic Field Center and School of Optical and Electronic InformationHuazhong University of Science and Technology Wuhan 430074 China
2. Institute of Microelectronics and Key Laboratory of Microelectronic Devices and Circuits (MoE)Peking University Beijing 100871 China
3. Frontiers Science Center for Nano‐OptoelectronicsPeking University Beijing 100871 China