Magnon Dirac materials

Abstract

We demonstrate how a Dirac-like magnon spectrum is generated for localized magnetic moments forming a two-dimensional honeycomb lattice. The Dirac crossing point is proven to be robust against magnon-magnon interactions, as these only shift the spectrum. Local defects induce impurity resonances near the Dirac point, as well as magnon Friedel oscillations. The energy of the Dirac point is controlled by the exchange coupling, and thus a two-dimensional array of magnetic dots is an experimentally feasible realization of Dirac magnons with tunable dispersion.

6 pages, 2 figures - article as published

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• Dirac magnons in honeycomb ferromagnets
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• Collective Excitations in 2D Materials
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• Spin Currents and Magnon Dynamics in Insulating Magnets
• ${\mathbb{Z}}_2$ Topological Invariant for Magnon Spin Hall Systems
• Magnon Spin-Momentum Locking: Various Spin Vortices and Dirac Magnons in Noncollinear Antiferromagnets
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• Topological Phases in Magnonics
• Topological magnon bands in the zigzag and stripy phases of antiferromagnetic honeycomb lattice
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• Weyl magnons in pyrochlore antiferromagnets with all-in-all-out orders
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• Three-dimensional topological magnon systems
• Magnonic Analogs of Topological Dirac Semimetals
• Topological magnetic excitations
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• Elastic Gauge Fields and Hall Viscosity of Dirac Magnons
• Dirac magnons, nodal lines, and nodal plane in elemental gadolinium
• Competing phases and topological excitations of spin-one pyrochlore antiferromagnets
• Magnon-phonon interactions enhance the gap at the Dirac point in the spin-wave spectra of CrI${}_3$ two-dimensional magnets
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• Chiral topological insulator of magnons
• Calculated magnetic exchange interactions in Dirac magnon material Cu3TeO6
• Topological magnons driven by the Dzyaloshinskii-Moriya interaction in the centrosymmetric ferromagnet Mn${}_5$Ge${}_3$
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• Magnon corner states in twisted bilayer honeycomb magnets
• Intrinsic nonlinear thermal Hall transport of magnons: A Quantum kinetic theory approach
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• Strain-Induced Topological Magnon Phase Transitions: Applications to Kagome-Lattice Ferromagnets
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• Interacting topological Dirac magnons
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• Topological phase transition in magnon bands in a honeycomb ferromagnet driven by sublattice symmetry breaking
• Laser control of magnonic topological phases in antiferromagnets
• Excitonic instability in optically-pumped three-dimensional Dirac materials
• Topological Magnon Bands in Ferromagnetic Star Lattice
• Photo-induced Entanglement in a Magnonic Floquet Topological Insulator
• Antiferromagnetic magnons from fractionalized excitations
• Topological Magnon Insulator with a Kekule Bond Modulation
• Pumping of magnons in a Dzyaloshinskii-Moriya ferromagnet
• Magnonic Floquet Hofstadter Butterfly
• Dirac cones and mass terms in bosonic spectra
• Magnonic triply-degenerate nodal points
• Topological Weyl magnons and thermal Hall effect in layered honeycomb ferromagnets
• Sizable suppression of magnon Hall effect by magnon damping in Cr${}_2$Ge${}_2$Te${}_6$
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• Polar phase of superfluid ${}^3$He: Dirac lines in the parameter and momentum spaces
• Magnonic analog of relativistic Zitterbewegung in an antiferromagnetic spin chain
• Electromagnetic Proximity Effect: Superconducting Magnonics and Beyond
• Fragility of ${\mathcal{Z}}_2$ topological invariant characterizing triplet excitations in a bilayer kagome magnet
• First-principles study of the gap in the spin excitation spectrum of the CrI${}_3$ honeycomb ferromagnet
• Nonlinear localized excitations in a topological ferromagnetic honeycomb lattice
• Pico-photonics: Anomalous Atomistic Waves in Silicon
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• Topological magnon nodal-lines and absence of magnon spin Nernst effect in layered collinear antiferromagnets
• Thermal Transport Properties of Magnons on the $\alpha$-T${}_3$ Lattice
• Spontaneously-Induced Dirac Boundary State and Digitization in a Nonlinear Resonator Chain
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• Spin wave excitations of magnetic metalorganic materials
• Magnon Hall effect in antiferromagnetic lattices
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• Dipolar spin-waves and tunable band gap at the Dirac points in the 2D magnet ErBr3
• Diversified Ruderman-Kittel-Kasuya-Yosida Interactions in a Nonsymmorphic Crystal
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• Topological Aspects of Antiferromagnets
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• Understanding the magnetic interactions of the zig-zag honeycomb lattice: Application to $\alpha$-RuCl${}_3$
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