1. Research Institute for Electronic Science, Hokkaido University, Kita 20, Nishi 10, Kita-ku, Sapporo, Hokkaido 001-0020, Japan
2. Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan
3. SAKURA Internet Research Center, SAKURA Internet Inc., Tokyo, Tatemono Umeda Building 11F, 1-12-12, Umeda, Kita-ku, Osaka 530-0001, Japan
4. National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan
5. Department of Electronics, School of Information and Communication Technology, Mongolian University of Science and Technology, Ulaanbaatar 14191, Mongolia