1. Department of Physics; Southern University of Science and Technology; Shenzhen 518055 China
2. Department of Physics; Harbin Institute of Technology; Harbin 150001 China
3. Department of Physics and Astronomy; University of Kansas; Lawrence KS 66045 USA
4. Department of Electrical and Electronic Engineering; Southern University of Science and Technology; Shenzhen 518055 China
5. SUSTech Academy for Advanced Interdisciplinary Studies; Southern University of Science and Technology; Shenzhen 518055 China