1. The Institute for Solid State Physics, the University of Tokyo, Kashiwa, Chiba 277-8581, Japan
2. RIKEN Center for Emergent Matter Science (CEMS), Saitama 351-0198, Japan
3. J-PARC Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
4. Department of Physics, Advanced Sciences, G.S.H.S. Ochanomizu University, Bunkyo, Tokyo 112-8610, Japan
5. Institute of Materials Structure Science, High Energy Accelerator Research Organization, Tsukuba, Ibaraki 305-0801, Japan
6. Trans-scale Quantum Science Institute, The University of Tokyo, Bunkyo, Tokyo 113-0033, Japan