1. College of Materials Science and Engineering Zhengzhou University Zhengzhou 450000 P. R. China
2. International Joint Research Laboratory for Quantum Functional Materials of Henan Province and School of Physics and Microelectronics Zhengzhou University Zhengzhou 450000 P. R. China
3. Shanghai Hydrogen Propulsion Technology Co., Ltd. Shanghai 200000 P. R. China
4. State Key Laboratory of Inorganic Synthesis & Preparative Chemistry Jilin University Changchun 130000 P. R. China
5. Department of Physics Tamkang University New Taipei City Taiwan
6. State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 P. R. China