1. Beijing National Laboratory for Condensed Matter Physics and Institute of PhysicsChinese Academy of Sciences Beijing 100190 China
2. School of Physical ScienceUniversity of Chinese Academy of Sciences Beijing 100190 China
3. Beijing Institute of Nanoenergy and Nanosystems Chinese Academy of SciencesNational Center for Nanoscience and Technology (NCNST) Beijing 100083 China
4. Division of Physics and Applied PhysicsSchool of Physical and Mathematical SciencesNanyang Technological University Singapore 637371 Singapore
5. National Key Laboratory of Science and Technology on Space MicrowaveChina Academy of Space Technology (Xi'an) Xi'an 710100 China
6. Beijing Key Laboratory for Nanomaterials and Nanodevices Beijing 100190 China
7. Collaborative Innovation Center of Quantum Matter Beijing 100190 China