Thermally induced magnon accumulation in two-sublattice magnets

Abstract

We present a temperature dependent study of the thermal excitation of magnonic spin currents in two-sublattice magnetic materials. Using atomistic spin model simulations, we study the local magnetization profiles in the vicinity of a temperature step in antiferromagnets, as well as in ferrimagnets. It is shown that the strength of the excitation of the spin currents in these systems scales with the derivative of the magnetization with respect to the temperature.

References in corpus (17)

• Spin Caloritronics
• Spin Seebeck insulator
• Long distance transport of magnon spin information in a magnetic insulator at room temperature
• Theory of magnon-driven spin Seebeck effect
• Critical suppression of spin Seebeck effect by magnetic fields
• Determination of the origin of the spin Seebeck effect - bulk vs. interface effects
• Antiferromagnetic Domain Wall Motion Induced by Spin Waves
• Landau-Lifshitz theory of the longitudinal spin Seebeck effect
• Propulsion of a domain wall in an antiferromagnet by magnons
• The effect of the magnon dispersion on the longitudinal spin Seebeck effect in yttrium iron garnets (YIG)
• Spin Seebeck effect in antiferromagnets and compensated ferrimagnets
• Origin of the thickness-dependent low-temperature enhancement of spin Seebeck effect in YIG films
• Observation of huge thermal spin currents in magnetic multilayers
• Magnetic field dependence of the magnon spin diffusion length in the magnetic insulator yttrium iron garnet
• Propagation of Thermally Induced Magnonic Spin Currents
• Magnetic field control of the spin Seebeck effect
• On the longitudinal spin current induced by a temperature gradient in a ferromagnetic insulator

Cited by in corpus (11)

• Noninteger-spin magnonic excitations in untextured magnets
• Thermal contribution to the spin-orbit torque in metallic/ferrimagnetic systems
• Pure spin currents in magnetically ordered insulator/normal metal heterostructures
• A review of modelling in ferrimagnetic spintronics
• Spin transport across antiferromagnets induced by the spin Seebeck effect
• Unveiling domain wall dynamics of ferrimagnets in thermal magnon currents: competition of angular momentum transfer and entropic torque
• Exceptional sign changes of the non-local spin Seebeck effect in antiferromagnetic hematite
• Spin caloric effects in antiferromagnets assisted by an external spin current
• Influence of spin-orbit and spin-Hall effects on the spin Seebeck current beyond linear response
• Magnetic field control of antiferromagnetic domain walls in a thermal gradient
• Transport properties of spin superfluids: comparing easy-plane ferro- and antiferromagnets