Affiliation: | 1. School of Science, Ministry of Education key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi,an Jiaotong University, Xi’an 710049, China;2. School of Physics Science and Electronics, Shanxi Datong University, Datong, Shanxi 037009, China;3. Xi’an Institute of Optics and Precision Mechanics Chinese Academy of Sciences, Xi’an 710048, China |