Affiliation: | (1) Institute of Applied Physics, Changchun University, Changchun, 130022, P.R. China;(2) Zhejiang Institute of Modern Physics, Department of Physics, Zhejiang University, HangZhou, 310027, P.R. China;(3) School of Science, Lanzhou University of Technology, Lanzhou, 730050, P. R. China;(4) School of Science, Changchun University of Science and Technology, Changchun, 130022, P.R. China |