1. a Department of Edectronic Materials Science , The Graduate School of Electronic Science and Technology, Shizuoka University , 3-5-1 Johoku, Hamamatsu , 432 , Japan
2. b Research Fellow of the Japan Society for the Promotion of Science
3. c Crystalline Films Laboratory , Research Institute of Electronics, Shizuoka University , 3-5-1 Johoku, Hamamatsu , 432 , Japan