3 years ago

Floquet Weyl Magnons.

S. A. Owerre

We show that periodically driven three-dimensional (3D) Dirac nodal-line and gapped trivial magnon phases can generate 3D magnonic Floquet Weyl points, which can be tuned by the incident light. We demonstrate the existence of magnonic Floquet Weyl points by combining the study of the magnon bands, Berry curvatures, and the thermal Hall effect. The general mechanism of our study can be applied to different quantum magnets, and thus extends the concept of Weyl magnon points to a broader class of 3D magnetically ordered systems.

Publisher URL: http://arxiv.org/abs/1801.03499

DOI: arXiv:1801.03499v1

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