Photoinduced Floquet topological magnons in a ferromagnetic checkerboard lattice

Zhang, Zhiqin; Feng, Wenhui; Yao, Yingbo; Tang, Bing

doi:10.1016/j.physleta.2021.127630

Cited by 12 publications

(2 citation statements)

References 23 publications

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“…In this research, let us begin with the Heisenberg ferromagnet on the 2D checkerboard lattice. [19,24] Theoretically, the checkerboard lattice can be regarded as one 2D projection of the 3D pyrochlore lattice. Some compounds (such as Sr 2 F 2 Se 2 and Na 2 Ti 2 Sb 2 O) can be described via the checkerboard lattice, [25] and new ferromagnetic materials with checkerboard lattice structures are expected to be synthesized in the future.…”

Section: Modelmentioning

confidence: 99%

Interacting topological magnons in a checkerboard ferromagnet

Zhu 朱,

Shi 施,

Tang 唐

et al. 2024

Chinese Phys. B

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This work is devoted to studying the magnon-magnon interaction effect in a two-dimensional checkerboard ferromagnet with the Dzyaloshinskii-Moriya interaction. By means of a first-order Green function method, we analyze the influence of magnon-magnon interaction on the magnon band topology. We find that Chern numbers of two renormalized magnon bands are different above and below the critical temperature, which means that the magnon band gap-closing phenomenon is an indicator for one topological phase transition of the checkerboard ferromagnet. Our results show that the checkerboard ferromagnet possesses two topological phases and its topological phase can be controlled either via the temperature or the applied magnetic field due to magnon-magnon interactions. Interestingly, it is found that the topological phase transition can occur twice with the increase of the temperature, which is different from the result of the honeycomb ferromagnet.

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Section: Modelmentioning

confidence: 99%

Interacting topological magnons in a checkerboard ferromagnet

Zhu 朱,

Shi 施,

Tang 唐

et al. 2024

Chinese Phys. B

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“…Recently, topologic phase transitions (TPT) have been an important subject in condensed matter physics because this class of phase transition cannot be described by the theory of spontaneous symmetry breaking. Within this realism, the study of topological electronic systems has been extended to topological magnon insulators, which are elementary excitations above a ground state in a magnetically ordered system present in magnetic materials, where the band structure is expected to exhibit nontrivial topological properties [ 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 ]. Although magnons can exhibit the thermal Hall effect in contrast to electronic systems, there are no quantized Hall plateaus because magnons obey Bose–Einstein statistics.…”

Section: Introductionmentioning

confidence: 99%

Entanglement Negativity and Concurrence in Some Low-Dimensional Spin Systems

Lima¹

2022

Entropy

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The influence of magnon bands on entanglement in the antiferromagnetic XXZ model on a triangular lattice, which models the bilayer structure consisting of an antiferromagnetic insulator and normal metal, is investigated. This effect was studied in ferromagnetic as well as antiferromagnetic triangular lattices. Quantum entanglement measures given by the entanglement negativity have been studied, where a magnon current is induced in the antiferromagnet due to interfacial exchange coupling between localized spins in the antiferromagnet and itinerant electrons in a normal metal. Moreover, quantum correlations in other frustrated models, namely the metal-insulation antiferromagnetic bilayer model and the Heisenberg model with biquadratic and bicubic interactions, are analyzed.

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