1. Department of Physics and Astronomy, Texas A&M University
2. College Station
3. USA
4. Department of Physics, University of Houston
5. Houston
6. Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China
7. Chengdu 610054
8. China
9. Texas Center for Superconductivity at the University of Houston, University of Houston
10. Department of Materials Science and Engineering, Texas A&M University