Affiliation: | Jie Zhang(1)),Yongyi Gao(2)),Junjie Xiao(1)),Changfu Xu(1)),Yunxin Liu(2)),Qibin Yang(1)*) 1) Institute of Modern Physics,Xiangtan University,Xiangtan 411105,China 2) Department of Physics,Hunan University of Science and Technology,Xiangtan 411201,China |