Institution: | 1. Department of Physics, MOE Key Laboratory of Advanced Transducers, and Intelligent Control System, Taiyuan University of Technology, Taiyuan 030024, China;2. Department of Applied Physics, Xi''an Jiaotong University, Xi''an 710049, China;3. School of Mathematics and Physics, Changzhou University, Changzhou 213164, China;4. Department of Applied Physics, Xi''an University of Technology, Xi''an 710054, China |