Chiral magnon-polaron edge states in Heisenberg-Kitaev magnets

Abstract

The interplay of spin and lattice fluctuations in two-dimensional magnets without inversion symmetry is investigated. We find a general form for the magnetoelastic coupling between magnons and existing chiral phonons based on the symmetries of the crystalline lattice. We show that in hexagonal lattices, the coupling of magnons and chiral phonons derives from an anisotropic exchange spin model containing topological phases of magnons. Using the Heisenberg-Kitaev-$\Gamma$ model, we show how magnon-polaron edge states with circular polarization arise from this interaction. Our findings exploit the polarization degrees of freedom in spin-lattice systems, thus setting the ground for the transfer of angular momentum between chiral phonons and magnons.

arXiv comment7 pages, 2 figures

References in corpus (46)

• Quantum Spin Hall Effect in Graphene
• Hybridizing ferromagnetic magnons and microwave photons in the quantum limit
• High cooperativity in coupled microwave resonator ferrimagnetic insulator hybrids
• Beyond skyrmions: Review and perspectives of alternative magnetic quasiparticles
• Quantum magnonics: when magnon spintronics meets quantum information science
• Valley contrasting chiral phonons in monolayer hexagonal lattices
• Angular Momentum of Phonons and Einstein-de Haas Effect
• Magnon spin transport driven by the magnon chemical potential in a magnetic insulator
• Supercurrent in a room temperature Bose-Einstein magnon condensate
• Topological Magnons in Kitaev Magnets at High Fields
• Pseudospins and topological effects of phonons in a Kekule lattice
• Entanglement of single-photons and chiral phonons in atomically thin WSe${}_2$
• Magnon-phonon interactions in magnetic insulators
• Thermal Hall Effect Induced by Magnon-Phonon Interactions
• Topological excitations in the ferromagnetic Kitaev-Heisenberg model
• Topological insulators and semimetals in classical magnetic systems
• Magnon-phonon interactions in magnon spintronics
• Chirality selective magnon-phonon hybridization and magnon-induced chiral phonons in a layered zigzag antiferromagnet
• Damping of magnetization dynamics by phonon pumping
• Thermal Hall effect, spin Nernst effect, and spin density induced by thermal gradient in collinear ferrimagnets from magnon-phonon interaction
• Tutorial: Nonlinear magnonics
• Chiral domain walls of Mn${}_3$Sn and their memory
• Vibrational Tamm states at the edges of graphene nanoribbons
• Chiral Phonons with Giant Magnetic Moments in a Topological Crystalline Insulator
• Long-Range Phonon Spin Transport in Ferromagnet-Nonmagnetic Insulator Heterostructures
• Chiral phonons and pseudo-angular momentum in non-symmorphic systems
• Topological Phases in Magnonics
• Angular Momentum Conservation and Phonon Spin in Magnetic Insulators
• Weyl phonons in chiral crystals
• Strongly coupled magnon-plasmon polaritons in graphene- 2D ferromagnet heterostructures
• Direct observation of topological magnon polarons in a multiferroic material
• Chirality-induced Phonon-Spin Conversion at an Interface
• Magnon-phonon interactions enhance the gap at the Dirac point in the spin-wave spectra of CrI${}_3$ two-dimensional magnets
• Chiral Anomaly in Interacting Condensed Matter Systems
• Spin Transport in Thick Insulating Antiferromagnetic Films
• Observation of a Chiral Wave Function in Twofold Degenerate Quadruple Weyl System BaPtGe
• Plasmon-magnon interactions in two-dimensional honeycomb magnets
• Magnon-Plasmon Hybridization Mediated by Spin-Orbit Interaction in Magnetic Materials
• Hybrid topological magnon-phonon modes in honeycomb and kagome lattices
• Magnon decay theory of Gilbert damping in metallic antiferromagnets
• Thermal Hall Effect in the Kitaev-Heisenberg System with Spin-Phonon Coupling
• Tunable topological magnon-polaron states and anomalous Hall phenomena in two-dimensional ferromagnetic insulators
• Conversion of chiral phonons into magnons in ferromagnets and antiferromagnets
• Role of magnons and the size effect in heat transport through an insulating ferromagnet/insulator interface
• Zero-frequency chiral magnonic edge states protected by non-equilibrium topology
• Spin Seebeck effect and phonon energy transfer in heterostructures containing layers of a normal metal and a ferromagnetic insulator

Cited by in corpus (4)

• Intrinsic Spin Nernst Effect and Chiral Edge Modes in van der Waals Ferromagnetic Insulators: Dzyaloshinskii-Moriya vs. Kitaev Interactions
• Topological characterization of magnon-polaron bands and thermal Hall conductivity in a frustrated kagome antiferromagnet
• Chiral Magnons: Mechanisms and Research Progress
• D-Wave Phonon Angular Momentum Texture in Altermagnets by Magnon-Phonon Hybridization