1. College of Materials & Environmental Engineering Hangzhou Dianzi University Hangzhou 310018 P. R. China
2. Fujian Provincial Key Laboratory of Quantum Manipulation and New Energy Materials Fujian Normal University Fuzhou 350117 P. R. China
3. College of Physics and Energy Fujian Normal University Fuzhou 350117 P. R. China
4. Key Laboratory of Strongly‐Coupled Quantum Matter Physics Chinese Academy of Sciences School of Physical Sciences University of Science and Technology of China Hefei 230026 P. R. China