Department of Physics, Yantai University, Yantai 264005, China;
Department of Physics, Yantai University, Yantai 264005, China;
Department of Physics, Yantai University, Yantai 264005, China;
Department of Physics, Yantai University, Yantai 264005, China;
College of Physics Science and Technology, Hebei University, Baoding 071002, China;
Department of Physics of Complex Systems, Weizmann Institute of Science, Rehovot 76100, Israel;