1. Laboratory for Materials and Structures, Institute of Innovative Research, Tokyo Institute of Technology, Yokohama 226-8503, Japan
2. Quemix Inc., Taiyo Life Nihombashi Building, Chuo, Tokyo 103-0027, Japan
3. Quantum Materials and Applications Research Center, National Institutes for Quantum Science and Technology (QST), Meguro, Tokyo 152-8550, Japan