1. Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore
2. Department of Physics, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
3. RIKEN Center for Emergent Matter Science (CEMS), Wako, Saitama 351-0198, Japan
4. Department of Physics, National University of Singapore, 2 Science Drive 3, 117551 Singapore
5. Laboratory for Topological Quantum Matter and Advanced Spectroscopy (B7), Department of Physics, Princeton University, Princeton, New Jersey 08544, United States
6. Department of Physics, Northeastern University, Boston, Massachusetts 02115, United States