1. Department of Physics Shanghai Key Laboratory of Materials Protection and Advanced Materials in Electric Power Shanghai University of Electric Power Shanghai 200090 China
2. National Center for Nanoscience and Technology Beijing 100190 China
3. Sino‐Danish college University of Chinese Academy of Sciences Beijing 100049 China
4. Department of Chemical Physics University of Science and Technology of China 96 Jinzhai Road Hefei Anhui Province 230026 China
5. State Key Laboratory of Computer Architecture Institute of Computing Technology Chinese Academy of Sciences Beijing 100190 China
6. School of physics and Technology Wuhan University Wuhan 430072 China