Weyl and nodal ring magnons in three-dimensional honeycomb lattices

Abstract

We study the topological properties of magnon excitations in a wide class of three dimensional (3D) honeycomb lattices with ferromagnetic ground states. It is found that they host nodal ring magnon excitations. These rings locate on the same plane in the momentum space. The rings can be gapped by Dzyaloshinskii-Moriya (DM) interactions to form two Weyl points with opposite charges. We explicitly discuss these physics in the simplest 3D honeycomb lattice, the hyperhoneycomb lattice and show drumhead and arc surface states in the nodal ring and Weyl phases, respectively, due to the bulk-boundary correspondence.

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Cited by in corpus (11)

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• Weyl magnons in noncoplanar stacked kagome antiferromagnets
• Weyl magnons in pyrochlore antiferromagnets with all-in-all-out orders
• Topological magnons with nodal-line and triple-point degeneracies: Implications for thermal Hall effect in pyrochlore iridates
• Spin Hall and Nernst effects of Weyl magnons
• Floquet Weyl Magnons
• Hinge Magnons from Non-collinear Magnetic Order in Honeycomb Antiferromagnet
• Instability and topological robustness of Weyl semimetals against Coulomb interaction
• Topological Weyl magnons and thermal Hall effect in layered honeycomb ferromagnets
• Topological magnons in Kitaev magnets with finite Dzyaloshinskii-Moriya interaction at high field
• Topological excitations in quasi two-dimensional quantum magnets with weak interlayer interactions