A Perspective on Magnon Spin Nernst Effect in Antiferromagnets

Abstract

Magnon excitations in antiferromagnetic materials and their physical implications enable novel device concepts not available in ferromagnets, emerging as a new area of active research. A unique characteristic of antiferromagnetic magnons is the coexistence of opposite spin polarization, which mimics the electron spin in a variety of transport phenomena. Among them, the most prominent spin-contrasting phenomenon is the magnon spin Nernst effect (SNE), which refers to the generation of transverse pure magnon spin current through a longitudinal temperature gradient. We introduce selected recent progress in the study of magnon SNE in collinear antiferromagnets with a focus on its underlying physical mechanism entailing profound topological features of the magnon band structures. By reviewing how the magnon SNE has inspired and enriched the exploration of topological magnons, we offer our perspectives on this emerging frontier that holds potential in future spintronic nano-technology.

References in corpus (31)

• Antiferromagnetic spintronics
• Ising-Type Magnetic Ordering in Atomically Thin FePS3
• Observation of the Magnon Hall Effect
• Theory of Thermal Hall Effect in Quantum Magnets
• Magnetic ground state of semiconducting transition metal trichalcogenide monolayers
• Theoretical prediction of rotating magnon wavepacket in ferromagnets
• Antiferromagnetic spin Seebeck Effect
• Spin Nernst Effect of Magnons in Collinear Antiferromagnets
• Thermal generation of spin current in an antiferromagnet
• Control and Local Measurement of the Spin Chemical Potential in a Magnetic Insulator
• A first theoretical realization of honeycomb topological magnon insulator
• Magnon spin Nernst effect in antiferromagnets
• A Realization of the Haldane-Kane-Mele Model in a System of Localized Spins
• Fundamental Spin Interactions Underlying the Magnetic Anisotropy in the Kitaev Ferromagnet CrI${}_3$
• Observation of the spin Nernst effect
• The Spin Nernst effect in Tungsten
• Signature of magnon Nernst effect in an antiferromagnetic insulator
• Antiferromagnetic Spin Wave Field-Effect Transistor
• Thermal Hall effect, spin Nernst effect, and spin density induced by thermal gradient in collinear ferrimagnets from magnon-phonon interaction
• SU(3) Topology of Magnon-Phonon Hybridization in 2D Antiferromagnets
• Nonlinear magnon spin Nernst effect in antiferromagnets and strain-tunable pure spin current
• ${\mathbb{Z}}_2$ Topological Invariant for Magnon Spin Hall Systems
• Intrinsic spin Nernst effect of magnons in a noncollinear antiferromagnet
• Topological magnon bands in the zigzag and stripy phases of antiferromagnetic honeycomb lattice
• Spin Seebeck and Spin Nernst Effects of Magnons in Noncollinear Antiferromagnetic Insulators
• Spin Hall and Nernst effects of Weyl magnons
• Spin Nernst effect in the Paramagnetic Regime of An Antiferromagnetic Insulator
• Magnetoelastic coupling enabled tunability of magnon spin current generation in 2D antiferromagnets
• Evolution of magnetic Dirac bosons in a honeycomb lattice
• A search for non-reciprocal magnons in MnPS${}_3$
• Topological magnon nodal-lines and absence of magnon spin Nernst effect in layered collinear antiferromagnets

Cited by in corpus (14)

• Giant spin Nernst effect in a two-dimensional antiferromagnet due to magnetoelastic coupling-induced gaps and interband transitions between magnon-like bands
• Tunable large spin Nernst effect in a two-dimensional magnetic bilayer
• Gauge-Invariant Measure of the Magnon Orbital Angular Momentum
• Non-linear magnon transport in a bilayer van der Waals antiferromagnets
• Hybridized magnonic materials for THz frequency applications
• Electrical reversal of the sign for magnon thermal Hall coefficient in a van der Waals bilayer antiferromagnet
• Magnon Hall effect in antiferromagnetic lattices
• Emerging (2+1)D electrodynamics and topological instanton in pseudo-Hermitian two-level systems
• Formulation of spin Nernst effect for spin-nonconserving insulating magnets
• Magnon bands and transverse transport in a proposed two-dimensional $C{u}_2{F}_5$ ferrimagnet
• Flavor Nernst effects in quantum paramagnets
• Proper Theory of Magnon Orbital Angular Momentum at Equilibrium
• Topological transverse spin transport in a canted antiferromagnet/heavy metal heterostructure
• Topology-induced symmetry breaking demonstrated in antiferromagnetic magnons on a Möbius strip