1. Department of Materials Science and Engineering, Southern University of Science and Technology, Shenzhen 518055, P.R. China
2. Materials Science and Engineering Program, University of Colorado, Boulder, Colorado 80309, United States
3. School of Microelectronics, Southern University of Science and Technology, Shenzhen 518055, P.R. China
4. Department of Physics, Southern University of Science and Technology, Shenzhen 518055, P.R. China
5. Shenzhen International Quantum Academy, Shenzhen 518048, P.R. China
6. Paul M. Rady Department of Mechanical Engineering and Department of Physics, University of Colorado, Boulder 80309, United States