1. Arts and Sciences, NYU Shanghai, Shanghai 200124, China
2. NYU-ECNU Institute of Physics at NYU Shanghai, Shanghai 200062, China
3. Max-Planck-Institut für Festköperforschung, Stuttgart 70569, Germany
4. Department of Physics and Chemistry, DGIST, Daegu 42988, Korea
5. Department of Physics, Osaka University, Toyonaka 560-0043, Japan
6. International Center for Materials Nanoarchitectonics, National Institute for Materials Science, Tsukuba 305-0044, Japan
7. Research Center for Functional Materials, National Institute for Materials Science, Tsukuba 305-0044, Japan