1. Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China
2. Department of Applied Physics, College of Science, Nanjing Forestry University, Nanjing 210037, China
3. Neutron Science Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
4. Collaborative Innovation Center of Light Manipulations and Applications, Shandong Normal University, Jinan 250358, China
5. Key Laboratory of Quantum Materials and Devices of Ministry of Education, School of Physics, Southeast University, Nanjing 211189, China
6. School of Science, Nanjing University of Posts and Telecommunications, Nanjing 210023, China
7. Institute for Advanced Materials, Hubei Normal University, Huangshi 435002, China