1. Department of Materials Science and Engineering, Tokyo Institute of Technology, Yokohama 226-8502, Japan
2. Department of Applied Molecular Chemistry, Nihon University, Narashino 275-8575, Japan
3. Research Center for Functional Materials, National Institute for Materials Science (NIMS), Tsukuba 305-0044, Japan
4. Synchrotron X-ray Group, National Institute for Materials Science (NIMS) and Synchrotron X-ray Station at SPring-8, Hyogo 679-5148, Japan
5. Department of Electrical and Electronic Engineering, Tokyo Institute of Technology, Yokohama, 226-8502, Japan