1. Key Laboratory of Advanced Technologies of Materials Science (Ministry of Education) Superconductivity and New Energy R&D Center (SNERDC) Southwest Jiaotong University Chengdu Sichuan 610031 China
2. College of Physics and Energy Fujian Normal University Fuzhou, Fujian 350117 China
3. Fujian Provincial Collaborative Innovation Center for Advanced High-Field Superconducting Materials and Engineering Fujian Normal University Fuzhou 350117 China