Author :
Miyamoto, Y. ; Kashima, I. ; Suwa, A. ; Furuya, Keiichi
Author_Institution :
Dept. of Physical Electronics, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo 152-8552, Japan; CREST, Japan Science and Technology Agency, 4-1-8 Honmachi, Kawaguchi-shi, Saitama 332-0012, Japan