Multiple topological phases of magnons induced by Dzyaloshinskii-Moriya and pseudodipolar anisotropic exchange interactions in Kagome ferromagnets

Abstract

Kagome magnets naturally hosting Dirac points and flat bands exhibit novel topological phases, enabling rich interplays between interactions and topologies. The discovery of two-dimensional (2D) magnets generally coexisting with different types of magnetic interactions poses a challenge for topological magnonic manipulation. Here we investigate the topological magnon phases of 2D Kagome ferromagnet with multiple magnetic anisotropic interactions, i.e. Dzyaloshinskii-Moriya interaction (DMI) and pseudo-dipolar interaction (PDI). It is found that the different sole magnetic anisotropic interactions introduce completely distinct topological phase diagrams and topological states. The multiple topological magnon phases with high Chern number emerge due to the distinct anisotropic interactions. Moreover, the interplay of the multiple anisotropic DMI and PDI interactions involved with Dirac and flat bands controls a variety of topological phase transitions, implying greater manipulation potential. In addition, the sign reversal of thermal Hall and Nernst conductivities induced by temperature is found in particular topological phase regions, namely topological origin, relating to the energy gap and Berry curvature (Chern number) in the vicinity of magnetic phase transition from the thermal fluctuations, providing a possible explanation for the experimental puzzles. All these results demonstrate that the novel topological magnonic properties in Kagome magnet with multiple magnetic anisotropic interactions can realize a potential platform for magnonic devices and quantum computing.

33 pages, 13 figures

References in corpus (36)

• Mott Insulators in the Strong Spin-Orbit Coupling Limit: From Heisenberg to a Quantum Compass and Kitaev Models
• Analogs of quantum Hall effect edge states in photonic crystals
• Observation of the Magnon Hall Effect
• Models and Materials for Generalized Kitaev Magnetism
• Theoretical prediction of rotating magnon wavepacket in ferromagnets
• Topological Magnon Insulator in Insulating Ferromagnet
• Half-integer quantized anomalous thermal Hall effect in the Kitaev material $\alpha$-RuCl${}_3$
• Magnetic texture based magnonics
• Tunable magnon Weyl points in ferromagnetic pyrochlores
• Dirac magnons in honeycomb ferromagnets
• Signature of magnon Nernst effect in an antiferromagnetic insulator
• Thermal Hall Effect of Spins in a Paramagnet
• Anomalous Hall effect for the phonon heat conductivity in paramagnetic dielectric
• High throughput computational screening for two-dimensional magnetic materials based on experimental databases of three-dimensional compounds
• Topological insulators and semimetals in classical magnetic systems
• Emergence of nontrivial magnetic excitations in a spin liquid state of kagome volborthite
• Order-by-Disorder from Bond-Dependent Exchange and Intensity Signature of Nodal Quasiparticles in a Honeycomb Cobaltate
• Topological magnons for thermal Hall transport in frustrated magnets with bond-dependent interactions
• Uniaxial ferromagnetism in the kagome metal TbV${}_6$Sn${}_6$
• Topological magnon bands in a room temperature Kagome magnet
• Spin wave spectrum of the quantum ferromagnet on the pyrochlore lattice Lu2V2O7
• Thermal Hall effects in quantum magnets
• Bosonic Bott Index and Disorder-Induced Topological Transitions of Magnons
• The interplay of Dzyaloshinskii-Moriya and Kitaev interactions for magnonic properties of Heisenberg-Kitaev honeycomb ferromagnets
• Dirac magnons, nodal lines, and nodal plane in elemental gadolinium
• Topological magnons driven by the Dzyaloshinskii-Moriya interaction in the centrosymmetric ferromagnet Mn${}_5$Ge${}_3$
• Topological Magnon Bands and Unconventional Thermal Hall Effect on the Frustrated Honeycomb and Bilayer Triangular Lattice
• Topological magnons on the triangular kagome lattice
• Lattice frustration in spin-orbit Mott insulator Sr3Ir2O7 at high pressure
• Chiral and flat-band magnetic cluster excitations in a ferromagnetic kagome metal
• Chiral phase transition and thermal Hall effect in an anisotropic spin model on the kagome lattice
• Topological magnons in one-dimensional ferromagnetic Su-Schrieffer-Heeger model with anisotropic interaction
• Topological magnons in Kitaev magnets with finite Dzyaloshinskii-Moriya interaction at high field
• Electrical reversal of the sign for magnon thermal Hall coefficient in a van der Waals bilayer antiferromagnet
• Theoretical realization of rich magnon topology by symmetry-breaking in honeycomb bilayer ferromagnets
• Chirality-selective topological magnon phase transition induced by interplay of anisotropic exchange interactions in honeycomb ferromagnet