1. Department of Physics, Material Science Institute, Center for Optical, Molecular, and Quantum Science, University of Oregon, Eugene, Oregon 97403, USA
2. Research Center for Functional Materials, National Institute for Materials Science, Tsukuba 305-0044, Japan
3. International Center for Materials Nanoarchitectonics, National Institute for Materials Science, Tsukuba 305-0044, Japan
4. Phil and Penny Knight Campus for Accelerating Scientific Impact, University of Oregon, Eugene, Oregon 97403, USA