Affiliation: | (1) Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing, 100080, P.R. China;(2) School of Materials Science and Technology, China University of Geosciences, Beijing, 100083, P.R. China;(3) China University of Mining & Technology, Beijing, 100083, P.R. China;(4) Department of Physics, Shanghai Jiao Tong University, Shanghai, 200240, P.R. China |