Light-Induced Tunable high-Chern-number Quantum Anomalous Hall Effect in Two-Dimensional k3- Rashba Systems

Key Points

• The aim is to explore a tunable high-Chern-number quantum anomalous Hall effect in two-dimensional Rashba systems.
• Utilized circularly polarized light to achieve band inversion in the k³-Rashba system
• Examined effects of varying light intensity and polarization angle on the Chern number
• Analyzed band structures under open boundary conditions
• Achieved a high Chern number of C=3 in the system
• Demonstrated tunability between C=0, 1, and 3
• Identified C=-1 and C=-3 by changing the polarization direction of light
• Confirmed existence of chiral edge states corresponding to the Chern numbers