1. International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan
2. Institute of Physics and Beijing National Laboratory for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100190, Republic of China
3. Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory, 119992 Moscow, Russia
4. Synchrotron X-ray Station at SPring-8, NIMS, Kohto 1-1-1, Sayo-cho, Hyogo 679-5148, Japan
5. Materials Analysis Station, NIMS, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan
6. Materials Processing Unit, NIMS, 1-2-1 Sengen, Tsukuba, Ibaraki 305-0047, Japan
7. Superconducting Properties Unit, NIMS, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan