Institution: | 1. School of Physics, Zhengzhou University, Zhengzhou, 450001 China
College of Science, Henan University of Engineering, Zhengzhou, 451191 China;2. Department of Physics, College of Sciences, Northeastern University, Shenyang, 110819 China;3. School of Physics, Zhengzhou University, Zhengzhou, 450001 China;4. Department of Physics, Yanbian University, Yanji, 133002 China |