1. Department of Physics and Texas Center for Superconductivity at the University of Houston (TcSUH) University of Houston Houston TX 77204 USA
2. Materials Science and Engineering Program University of Houston Houston TX 77204 USA
3. Department of Chemistry University of Houston Houston TX 77204 USA
4. Department of Mechanical Engineering Rice University Houston TX 77005 USA
5. Institute for Advanced Materials Hubei Normal University Huangshi 435002 China
6. Department of Materials Science and Nano‐Engineering Rice University Houston TX 77005 USA
7. Department of Electrical and Computer Engineering and Texas Center for Superconductivity at the University of Houston (TcSUH) University of Houston Houston TX 77204 USA
8. College of Physical Science and Technology Central China Normal University Wuhan 430079 China