Affiliation: | [1]Department of Physics, Hangzhou Normal University, Hangzhou 310018; [2]Department of Physics, Oklahoma State University, Stillwater 74075, USA [3]Zhejiang Economic and Trade Polytechnic, Hangzhou 310036 [4]Division of Electronics for Informatics, Graduate School of Information Science and Technology, Hokkaido University, N-14, W-9, Kita-ku, Sapporo, Hokkaido 060-0814, Japan [5]CREST, Japan Science and Technology Agency, 4-1-8, Honchou, Kawaguchi, Saitama 332-0012, Japan |