Comparing the influence of Floquet dynamics in various Kitaev-Heisenberg materials

In this paper we examine the possibility of Floquet engineering in the three candidate Kitaev materials Na2IrO3, alpha-Li2IrO3, and alpha-RuCl3 . We derive an effective Floquet Hamiltonian and give an approximation for heating processes arising from doublon holon propagation. This suggests that compounds with stronger Hund's rule coupling are less prone to heating. We then investigate the impact of light frequency and amplitude on magnetic interaction terms up to third nearest neighbor and find that third neighbor Heisenberg coupling. J(3) is very susceptible to tuning by circularly polarized light. Finally, we discuss uses of linear polarized light in selectively tuning single bond directions.

Automated summary

In this paper, the possibility of Floquet engineering in three candidate Kitaev materials is examined. The authors derive an effective Floquet Hamiltonian and approximate the heating processes arising from doublon holon propagation. The impacts of light frequency and amplitude on magnetic interaction terms are investigated, and the uses of linear polarized light in selectively tuning single bond directions are discussed.