Tunable Berry curvature dipole and hexapole in linearly polarized light-irradiated type-I semi-Dirac systems

We investigate the effect of linearly polarized light (LPL) in type-I semi-Dirac (SD) systems. LPL can drive a transition between the single- and double-node phases in the system. Furthermore, the Berry curvature dipole (BCD) and Berry curvature hexapole (BCH) in the system change across the transition when the Fermi energy is near the band edge, while BCD and BCH can be suppressed by LPL when the Fermi energy moves away from the band edge. Moreover, the Berry curvature quadrupole (BCQ) is zero, regardless of whether LPL is present. These results will be useful for exploring the quantum geometry-driven nonlinear Hall effect in real materials.