School of Materials Science and Technology;
China University of Geosciences;
Beijing 100083;
China Beijing National Laboratory for Condensed Matter Physics;
Institute of Physics Chinese Academy of Sciences;
Beijing 100080;
China;
Beijing National Laboratory for Condensed Matter Physics;
Institute of Physics;
Chinese Academy of Sciences;
Beijing 100080;
China;
School of Materials Science and Technology;
China University of Geosciences;
Beijing 100083;
China;