Floquet topological magnons

Floquet topological magnons

We introduce the concept of Floquet topological magnons-a mechanism by which a synthetic tunable Dzyaloshinskii-Moriya interaction (DMI) can be generated in quantum magnets using circularly polarized electric (laser) field. The resulting effect is that Dirac magnons and nodal-line magnons in two-dim...

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Veröffentlicht in:Journal of physics communications 2017-09, Vol.1 (2), p.21002
1. Verfasser: Owerre, S A
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Sprache:eng
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circularly polarized laser light
Floquet magnon Chern insulators
Floquet thermal Hall effect
Floquet Weyl magnons
Lasers
tunable Dzyaloshinskii-Moriya interaction
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description We introduce the concept of Floquet topological magnons-a mechanism by which a synthetic tunable Dzyaloshinskii-Moriya interaction (DMI) can be generated in quantum magnets using circularly polarized electric (laser) field. The resulting effect is that Dirac magnons and nodal-line magnons in two-dimensional and three-dimensional quantum magnets can be tuned to magnon Chern insulators and Weyl magnons respectively under circularly polarized laser field. The Floquet formalism also yields a tunable intrinsic DMI in insulating quantum magnets without an inversion center. We demonstrate that the Floquet topological magnons possess a finite thermal Hall conductivity tunable by the laser field.
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subjects circularly polarized laser light
Floquet magnon Chern insulators
Floquet thermal Hall effect
Floquet Weyl magnons
Lasers
tunable Dzyaloshinskii-Moriya interaction
title Floquet topological magnons
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