Affiliation: | (1) The School of Science, Southwest University of Science and Technology, 621010, Mianyang, P.R. China;(2) The Department of Modern Physics, University of Science and Technology of China, 230026, Hefei, P.R. China;(3) State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, 430070, Wuhan, P.R. China |