1. Nanomaterials Laboratory, National Institute for Materials Science (NIMS), Tsukuba, Ibaraki 305-0003, Japan, Tsukuba Magnet Laboratory, National Institute for Materials Science (NIMS), Tsukuba, Ibaraki 305-0003, Japan, Department of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science (RIKADAI), Noda, Chiba 278-8510, Japan, and Protein Dynamics Research Group, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8566, Japan