1. MIIT Key Laboratory for Low‐Dimensional Quantum Structure and Devices School of Materials Science and Engineering and Shenzhen Research Institute Beijing Institute of Technology 5 Zhongguancun South Street, Haidian District Beijing 100081 China
2. Beijing National Laboratory for Condensed Matter Physics Institute of Physics Chinese Academy of Sciences Beijing 100190 China
3. School of Physical Sciences University of Chinese Academy of Sciences Beijing 100190 China
4. School of Chemistry and Chemical Engineering Xi'an University of Architecture and Technology No. 13 Yanta Road Xi'an Shaanxi Province 710055 China