Affiliation: | School of Physics, Shandong University, Jinan 250100, China; College of Science, Shandong Jian Zhu University, Jinan 250101, China;School of Physics, Shandong University, Jinan 250100, China;School of Physics, Shandong University, Jinan 250100, China; State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China;College of Science, Shandong Jian Zhu University, Jinan 250101, China;School of Physics, Shandong University, Jinan 250100, China |