Affiliation: | (1) Department of Applied Physics, Tokyo Institute of Technology, Meguro-ku, 152 Tokyo, Japan;(2) Department of Physics, University of Tokyo, Bunkyo-ku, 113 Tokyo, Japan;(3) RIKEN, Wako-shi, 351-01 Saitama, Japan;(4) School of General Education, Osaka University, 560 Toyonaka, Osaka, Japan |