1. Thin‐Film Device LaboratoryRIKEN 2‐1 Hirosawa Wako Saitama 351–0198 Japan
2. Electrical and Electronic Engineering and Information SystemsThe University of Tokyo 7‐3‐1 Bunkyo‐ku Tokyo 113–8656 Japan
3. Center for Emergent Matter ScienceRIKEN 2‐1 Hirosawa Wako Saitama 351–0198 Japan
4. Department of Applied ChemistryHiroshima University 1‐4‐1 Kagamiyama Higashi‐Hiroshima Hiroshima, 739–8527 Japan
5. Department of Modern Mechanical EngineeringWaseda University Shinjuku, 169–8555 Tokyo Japan