1. Department of Physics, The Chinese University of Hong Kong, Shatin, Hong Kong SAR, China
2. State Key Lab of Rare Earth Materials Chemistry and Applications, Peking University, Beijing 100871, China
3. Advanced Nanofabrication, Imaging and Characterization Core Lab, King Abdullah University of Science and Technology, Thuwal 23955, Kingdom of Saudi Arabia
4. Beijing Computational Science Research Center, Beijing 100084, China