1. College of
Physics and Electronic
Engineering, Jiangsu Normal University,
Xuzhou 221116, China
2. Department
of Applied Physics, Nanjing University of Aeronautics and Astronautics,
Nanjing 210016, China
3. Department
of Nuclear Science
and Engineering and Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts
02139, United States
4. State
Key Laboratory for Mechanical
Behavior of Materials and Frontier Institute of Science and Technology, Xi’an Jiaotong University, Xi’an, 710049,
China
5. International Center
for Quantum
Materials, School of Physics, Peking University, Beijing 100871, China