Spin torque and Nernst effects in Dzyaloshinskii-Moriya ferromagnets

Abstract

We predict that a temperature gradient can induce a magnon-mediated intrinsic torque and a transverse spin current in systems with non-trivial magnon Berry curvature. With the help of a microscopic linear response theory of nonequilibrium magnon-mediated torques and spin currents we identify the interband and intraband components that manifest in ferromagnets with Dzyaloshinskii-Moriya interactions and magnetic textures. To illustrate and assess the importance of such effects, we apply our theory to the magnon-mediated spin Nernst and torque responses in a kagome lattice ferromagnet.

5 pages, 3 figures, supplemental material

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• Magnonic Analogue of Edelstein Effect in Antiferromagnetic Insulators
• Magnonic Floquet Quantum Spin Hall Insulator in Bilayer Collinear Antiferromagnets
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• Evidence of Magnon-Mediated Orbital Magnetism in a Quasi-2D Topological Magnon Insulator
• Magnon quantum anomalies in Weyl ferromagnets
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• Discovering momentum-dependent magnon spin texture in insulating antiferromagnets: Role of the Kitaev interaction
• Fragility of ${\mathcal{Z}}_2$ topological invariant characterizing triplet excitations in a bilayer kagome magnet
• Magnon gravitomagnetoelectric effect in noncentrosymmetric antiferromagnetic insulators
• Zero-frequency chiral magnonic edge states protected by non-equilibrium topology
• Thermal Transport Properties of Magnons on the $\alpha$-T${}_3$ Lattice
• Magnon Hall effect in antiferromagnetic lattices
• Intrinsic Spin Nernst Effect and Chiral Edge Modes in van der Waals Ferromagnetic Insulators: Dzyaloshinskii-Moriya vs. Kitaev Interactions
• Chirality-induced magnon transport in AA-stacked bilayer honeycomb chiral magnets
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• Magnon bands and transverse transport in a proposed two-dimensional $C{u}_2{F}_5$ ferrimagnet
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• Band topology and dynamic multiferroicity induced from dynamical Dzyaloshinskii-Moriya interactions in centrosymmetric lattices
• Revealing Spin and Spatial Symmetry Decoupling: New Insights into Magnetic Systems with Dzyaloshinskii-Moriya Interaction
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• Dirac magnons pairing via pumping
• Thermal Spin-Orbit Torque in Spintronics