1. Department of Materials Science & Engineering, CAS Key Laboratory of Materials for Energy Conversion, Anhui Laboratory of Advanced Photon Science and Technology, University of Science and Technology of China, Hefei 230026, China
2. Department of Physics and CAS Key Laboratory of Strongly-coupled Quantum Matter Physics, University of Science and Technology of China, Hefei 230026, China
3. Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, China
4. Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
5. Key Laboratory of Artificial Structures and Quantum Control, Shenyang National Laboratory for Materials Science, School of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240, China