1. Center of Materials Science and Optoelectronics Engineering College of Materials Science and Optoelectronic Technology University of Chinese Academy of Sciences Beijing 100049 P. R. China
2. Institute of Advanced Science Facilities Shenzhen Guangdong 518107 P. R. China
3. Beijing National Laboratory for Condensed Matter Physics Institute of Physics Chinese Academy of Science Beijing 100190 P. R. China
4. Dynamics and Transport in Quantum Materials Helmholtz‐Zentrum Berlin für Materialen und Energie Albert‐Einstein‐Strasse 15 12489 Berlin Germany
5. Neutron Scattering Division Oak Ridge National Laboratory Oak Ridge Tennessee 37830 USA
6. Shanghai Institute of Microsystem and Information Technology Chinese Academy of Science Shanghai 200050 P. R. China
7. CAS Center for Excellence in Topological Quantum Computation University of Chinese Academy of Sciences Beijing 100190 China