1. College of Materials Science and Engineering, Zhengzhou University, Zhengzhou 450001, P. R. China
2. International Joint Research Laboratory for Quantum Functional Materials of Henan Province, and School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450001, P. R. China
3. Canadian Light Source, 44 Innovation Boulevard, Saskatoon, Saskatchewan S7N 2V3, Canada
4. State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, P. R. China
5. Foshan Xianhu Laboratory, Foshan 528200, P. R. China