Masaki Mori (1), Akiko Kawachi (2), Shigehiro Nagataki (3), Tsuguya Naito (4) ((1) Dept. Physical Sciences, Ritsumeikan University, (2) Dept. Physics, Tokai University, (3) YITP, Kyoto University, (4) Faculty of Management Information, Yamanashi Gakuin University)