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arXiv · 2106.05936

Photoinduced Floquet topological magnons in a ferromagnetic checkerboard lattice

Zhiqin Zhang·Wenhui Feng·Yingbo Yao·Bing Tang
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Abstract

This theoretical work is devoted to investigating laser-irradiated Floquet topological magnon insulators on a two-dimensional checkerboard ferromagnet and corresponding topological phase transitions. It is shown that the checkerboard Floquet topological magnon insulator is able to be transformed from a topological magnon insulator into another one possessing various Berry curvatures and Chern numbers by changing the light intensity. Especially, we also show that both Tamm-like and topologically protected Floquet magnon edge states can exist when a nontrivial gap opens. In addition, our results display that the sign of the Floquet thermal Hall conductivity is also tunable via varying the light intensity of the laser field.

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Zhiqin Zhang, Wenhui Feng, Yingbo Yao, Bing Tang. 2021-06-10. Photoinduced Floquet topological magnons in a ferromagnetic checkerboard lattice. https://doi.org/10.1016/j.physleta.2021.127630

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