1. Department of Molecular Engineering, Graduate School of Engineering, Kyoto University, Nishikyo-Ku, Kyoto 615-8510, Japan
2. Institute for Quantum Life Science, National Institutes for Quantum and Radiological Science and Technology, Anagawa 4-9-1, Inage-Ku, Chiba 263-8555, Japan
3. Institute of Chemical Research, Kyoto University, Uji, Kyoto 610-0011, Japan
4. Laboratory for Inorganic Chemistry, ETH Zurich, CH-8093 Zürich, Switzerland
5. NanoCarbon Research Institute, AREC, Shinshu University, Ueda, Nagano 386-8567, Japan
6. Laboratory for Solid State Physics, ETH Zurich, 8093 Zürich, Switzerland
7. Laboratory of Physical Chemistry, ETH Zurich, 8093 Zürich, Switzerland