1. Beijing
National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
2. Collaborative Innovation Center of Quantum Matter, Beijing 100190, China
3. Nanosystem
Research Institute, National Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki 305-8562, Japan
4. Japan
Science and Technology Agency, CREST, Kawaguchi, Saitama 330-0012, Japan