1. Department of Materials
Physics and Chemistry, University of Science and Technology Beijing, Beijing 100083, People’s Republic of China
2. State Key Laboratory of Heavy Oil Processing, China University of Petroleum-Beijing, Beijing 102249, China
3. Centre for the Physics of Materials and
Department of Physics, McGill University, Montreal, Quebec H3A2T8, Canada
4. Department
of Physics, Aberystwyth University, Aberystwyth SY23 3BZ, United Kingdom
5. Department of Mechanical Engineering and
Texas Center for Superconductivity (TcSUH), University of Houston, Houston, Texas 77204, United States