1. Wuhan National Laboratory for Optoelectronics (WNLO) and School of Optical and Electronic Information; Huazhong University of Science and Technology (HUST); Wuhan 430074 China
2. Key Laboratory for Computational Physical Sciences (MOE); Department of Physics; Fudan University; Shanghai 200433 China
3. State Key Laboratory of Rare Earth Resource Utilization; Changchun Institute of Applied Chemistry; Chinese Academy of Sciences; Jilin 130022 China
4. Key Laboratory of Polar Materials and Devices (MOE); East China Normal University; Shanghai 200241 China