[1] Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China
[2] Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
[3] Shijiazhuang Railway Inst, Shijiazhuang 050043, Peoples R China
[4] Fudan Univ, Dept Phys, T Life Res Ctr, Shanghai 200433, Peoples R China
[5] Chinese Acad Sci, TPCSF, Beijing 100049, Peoples R China