Research Article Bei Ding, Bei Ding Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190 China Search for more papers by this author Jun Liu, Jun Liu Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100190 China Search for more papers by this author Hang Li, Hang Li Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese...