[Yi, Han; Lu, LiMing; Xiao, ZhiGang] Tsinghua Univ, Dept Phys, Beijing 100084, Peoples R China.
[Xiao, ZhiGang] Collaborat Innovat Ctr Quantum Matter, Beijing 100084, Peoples R China.
[Shao, Ming] Univ Sci & Technol China, Dept Modern Phys, Hefei 230026, Peoples R China.
[Zhang, Song] Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China.
[Xiao, Guoqing] Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China.