1. Department of Physics and Advanced Functional Materials LabChangshu Institute of Technology Changshu 215500 China
2. New Energy Technology Engineering Laboratory of Jiangsu Province & School of ScienceNanjing University of Posts and Telecommunications Nanjing 210023 China
3. High Field Magnet Laboratory (HFML‐EMFL)Radboud University 6525ED Nijmegen The Netherlands
4. Department of PhysicsFudan University Shanghai 200433 China