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arXiv · 2402.07731

Photoinduced Topological Phase Transitions in a Kitaev kagome magnet

Zhengguo Tang·Hongchao Shi·Heng Zhu·Bing Tang·Chaofei Liu
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Abstract

The photoinduced topological phase transitions and thermal Hall conductivity of a kagome magnet with Heisenberg, Kitaev, and DM interactions under an external magnetic field aligned along the [111] directions is investigated in this study. In the presence of a strong magnetic field perpendicular to the lattice plane in the [111] direction, the system exhibits a fully polarized paramagnetic phase and the magnon band carries an asymmetric Chern number across the phase diagram region. Utilizing magnetic Floquet-Bloch theory, we demonstrate that periodically driven intrinsic topological magnetic materials can be manipulated into different topological phases with varying Berry curvature, Chern numbers and thermal Hall conductivities signatures by adjusting light intensity throughout the phase diagram region.

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Zhengguo Tang, Hongchao Shi, Heng Zhu, Bing Tang, Chaofei Liu. 2024-02-12. Photoinduced Topological Phase Transitions in a Kitaev kagome magnet. https://arxiv.org/abs/2402.07731

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