1. School of Physics; Peking University; Beijing 100871 P. R. China
2. State Key Laboratory of Nuclear Physics and Technology; Peking University; P. R. China
3. Key Laboratory of HEDP of the Ministry of Education; Peking University; P. R. China
4. Center for Applied Physics and Technology; Peking University; P. R. China
5. Institute of Heavy Ion Physics; Peking University; P. R. China. Shenzhen Institutes of Advanced Technology; Chinese Academy of Sciences; Shenzhen 518055 P. R. China
6. Institute of Heavy Ion Physics; Peking University; P. R. China
7. Key Laboratory for the Physics and Chemistry of Nanodevices and Department of Electronics; Peking University; Beijing 100871 P. R. China
8. Academy for Advanced Interdisciplinary Studies; Peking University; P. R. China
9. SIP-UCLA Institute for Technology Advancement; Jiangsu Province; Suzhou 215123 P. R. China