Sign Changes in Heat, Spin, and Orbital Magnon Transport Coefficients in Kitaev Ferromagnets

Abstract

Both Kitaev and Dzyaloshinskii-Moriya interactions (DMI) are known to promote intrinsic contributions to the magnon Hall effects such as the thermal Hall and the spin Nernst effects in collinear magnets. Previously, it was reported that a sign change in those transversal transport coefficients only appears in the presence of Kitaev interaction, but not for DMI, which qualitatively distinguishes both kinds of spin-anisotropic interactions in ferromagnets. Herein, we systematically study how the magnon-mediated heat, spin, and orbital transport in longitudinal and transverse geometries evolves with a continuously varying Kitaev-to-DMI ratio, but a fixed magnon band structure. We show that several transport coefficients feature temperature-driven sign changes in the presence of Kitaev interaction, which are absent for DMI. In particular, we find a sign change in longitudinal orbital transport, the magnon orbital Seebeck effect, which is absent in the transverse geometry, the magnon orbital Nernst effect. This sets the orbital transport apart from the heat and spin transport, where we only find sign changes promoted by the Kitaev interaction in transverse, but not in the longitudinal geometry.

arXiv commentPublished version

References in corpus (61)

• Fault-tolerant quantum computation by anyons
• Anyons in an exactly solved model and beyond
• Mott Insulators in the Strong Spin-Orbit Coupling Limit: From Heisenberg to a Quantum Compass and Kitaev Models
• Spin current and magneto-electric effect in non-collinear magnets
• Kitaev-Heisenberg Model on Honeycomb Lattice: Possible Exotic Phases in Iridium Oxides $A_2$IrO${}_3$
• Proximate Kitaev Quantum Spin Liquid Behaviour in α-RuCl${}_3$
• $\alpha$-RuCl3: a Spin-Orbit Assisted Mott Insulator on a Honeycomb Lattice
• Relevance of the Heisenberg-Kitaev model for the honeycomb lattice iridates A_2IrO_3
• Generic spin model for the honeycomb iridates beyond the Kitaev limit
• Spin waves and revised crystal structure of honeycomb iridate Na2IrO3
• Theory of Thermal Hall Effect in Quantum Magnets
• On the Origin of Zigzag Magnetic Order in Iridium Oxide Na2IrO3
• Magnetic order in $\alpha$-RuCl${}_3$: a honeycomb lattice quantum magnet with strong spin-orbit coupling
• Intrinsic Spin and Orbital Hall Effects from Orbital Texture
• Theoretical prediction of rotating magnon wavepacket in ferromagnets
• Topological chiral magnonic edge mode in a magnonic crystal
• Interplay between Kitaev interaction and single ion anisotropy in ferromagnetic CrI${}_3$ and CrGeTe${}_3$ monolayers
• Topological spin excitations in honeycomb ferromagnet CrI${}_3$
• Kitaev magnetism in honeycomb RuCl3 with intermediate spin-orbit coupling
• Gigantic intrinsic orbital Hall effects in weakly spin-orbit coupled metals
• Spin Nernst Effect of Magnons in Collinear Antiferromagnets
• Pseudospin exchange interactions in d^7 cobalt compounds: Possible realization of the Kitaev model
• Orbitronics: the Intrinsic Orbital Hall Effect in p-Doped Silicon
• Rotational motion of magnon and thermal Hall effect
• Kitaev interactions between j=1/2 moments in honeycomb Na2IrO3 are large and ferromagnetic: insights from ab initio quantum chemistry calculations
• Magnetization transport and quantized spin conductance
• Magnon spin Nernst effect in antiferromagnets
• Spin-wave excitations evidencing the Kitaev interaction in single crystalline $\alpha$-RuCl${}_3$
• Symmetry-imposed shape of linear response tensors
• A Short Introduction to Topological Quantum Computation
• Kitaev-Heisenberg Hamiltonian for High-Spin $d^7$ Mott Insulators
• Kitaev Spin Liquid in 3d Transition Metal Compounds
• Fundamental Spin Interactions Underlying the Magnetic Anisotropy in the Kitaev Ferromagnet CrI${}_3$
• Hidden symmetries of the extended Kitaev-Heisenberg model: Implications for honeycomb lattice iridates A2IrO3
• Magnetic Two-Dimensional Chromium Trihalides: A Theoretical Perspective
• Topological Magnons in Kitaev Magnets at High Fields
• Orbital Hall effect as an alternative to valley Hall effect in gapped graphene
• Kitaev interactions in the Co honeycomb antiferromagnets Na${}_3$Co${}_2$SbO${}_6$ and Na${}_2$Co${}_2$TeO${}_6$
• Thermomagnonic spin transfer and Peltier effects in insulating magnets
• Magnetic field effect on topological spin excitations in CrI${}_3$
• Sign structure of thermal Hall conductivity for in-plane-field polarized Kitaev magnets
• Spin Wave Analysis of Low-Temperature Thermal Hall Effect in the Candidate Kitaev Spin Liquid $\alpha$-RuCl${}_3$
• Topological magnonics in the two-dimensional van der Waals magnet CrI3
• Magnetic Anisotropy in Spin-3/2 with Heavy Ligand in Honeycomb Mott Insulators: Application to CrI${}_3$
• Topological magnons for thermal Hall transport in frustrated magnets with bond-dependent interactions
• Intrinsic spin Nernst effect of magnons in a noncollinear antiferromagnet
• Magnon Spin-Momentum Locking: Various Spin Vortices and Dirac Magnons in Noncollinear Antiferromagnets
• Orbital Magnetic Moment of Magnons
• The interplay of Dzyaloshinskii-Moriya and Kitaev interactions for magnonic properties of Heisenberg-Kitaev honeycomb ferromagnets
• Orbital Hall effect and orbital edge states caused by s electrons
• Spin Seebeck and Spin Nernst Effects of Magnons in Noncollinear Antiferromagnetic Insulators
• Phonon Thermal Hall Conductivity from Scattering with Collective Fluctuations
• The Krein-Schrödinger Formalism of Bosonic BdG and Certain Classical Systems and Their Topological Classification
• Thermal Conductivity and Theory of Inelastic Scattering of Phonons by Collective Fluctuations
• Determining Kitaev interaction in spin-$S$ honeycomb Mott insulators
• Magnonic Analogue of Edelstein Effect in Antiferromagnetic Insulators
• Topological magnon gap engineering in van der Waals CrI${}_3$ ferromagnets
• Phonon thermal Hall effect in Mott insulators via skew-scattering by the scalar spin chirality
• Intrinsic Nernst effect of the magnon orbital moment in a honeycomb ferromagnet
• Thermal Hall Effect of Magnons from Many-Body Skew Scattering
• Topological phase diagrams of in-plane field polarized Kitaev magnets

Cited by in corpus (1)

• Angular-Dependent Thermal Hall Effect in a Honeycomb Magnet: Disentangling Kitaev and Dzyaloshinskii-Moriya Interactions