*Tomihiro Hashizume^1,2, Tomoo Sigehuzi³, Takashi Tokizaki³, Takafumi Miwa^4,2, Masatoshi Yasutake⁵ (1. R&D Group, Hitachi, Ltd. Hatoyama (Japan), 2. Dep. of Physics, Tokyo Inst. Technol. (Japan), 3. AIST (Japan), 4. R&D Group, Hitachi, Ltd. Kokubunji (Japan), 5. Hitachi High-Tech Co. (Japan))

*Jiyoon Hwang^1,2, Robbie J.G. Albertse³, Taehong Ahn^1,2, Denis Krylov², Jeongmin Oh¹, Xander F. Otte³, Andreas J. Heinrich^1,2, Yujeong Bae^1,2 (1. Ewha Womans University (Korea), 2. Center for Quantum Nanoscience (Korea), 3. Delft University of Technology (Netherlands))

*Shunsuke Sato¹, Rei Hobara¹, Ryota Akiyama¹, Kazumi Watanabe¹, Shuji Hasegawa¹ (1. Dept. of Phys., Univ. of Tokyo (Japan))

*Bareld Wit¹, Stefan Müllegger¹ (1. Johannes Kepler University Linz (Austria))

*Akitoshi Shiotari¹, Melanie Müller¹, Fabian Schulz¹, Adnan Hammud², Shuyi Liu¹, Jun Nishida³, Takashi Kumagai³, Martin Wolf¹ (1. Dept. Phys. Chem., Fritz Haber Institute (Germany), 2. Dept. Inorg. Chem., Fritz Haber Institute (Germany), 3. Institute for Molecular Science (Japan))

*Nobuyuki Ishida¹ (1. National Institute for Materials Science (Japan))

*Ying Jiang¹ (1. Peking University (China))