Spin Seebeck effect at microwave frequencies

Abstract

We experimentally study the transient voltage response of yttrium iron garnet/platinum bilayer samples subject to periodic heating up to gigahertz frequencies. We observe an intrinsic cutoff frequency of the induced thermopower voltage, which characteristically depends on the thickness of the yttrium iron garnet film. The cutoff frequency reaches values of up to 350 MHz in a 50 nm thick yttrium iron garnet film, but drops to below 1 MHz for several-micrometer-thick films. These data corroborate the notion that the magnon spectrum responsible for the spin current emission in the spin Seebeck effect can be shaped by tuning the thickness of the ferromagnetic layer.

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• Quantitative Temperature Dependence of Longitudinal Spin Seebeck Effect at High Temperatures
• Propagation of Thermally Induced Magnonic Spin Currents
• Sub-microsecond fast temporal evolution of the spin Seebeck effect
• Spectral non-uniform temperature, non-local heat transfer, and the spin Seebeck effect
• Time resolved spin Seebeck effect experiments
• Fokker-Planck approach to the theory of magnon-driven spin Seebeck effect
• Microwave-induced spin currents in ferromagnetic-insulator|normal-metal bilayer system
• Spectral characteristics of time resolved magnonic spin Seebeck effect
• Spin Hall Magnetoimpedance

Cited by in corpus (18)

• Femtosecond formation dynamics of the spin Seebeck effect revealed by terahertz spectroscopy
• Picosecond spin Seebeck effect
• Pure spin currents in magnetically ordered insulator/normal metal heterostructures
• Complex THz and DC inverse spin Hall effect in YIG/Cu${}_{1-x}$Ir${}_x$ bilayers across a wide concentration range
• Temperature dependent relaxation of dipole-exchange magnons in yttrium iron garnet films
• Thermally induced magnonic spin current, thermomagnonic torques and domain wall dynamics in the presence of Dzyaloshinskii-Moriya interaction
• Imaging Magnetization Structure and Dynamics in Ultrathin YIG/Pt Bilayers with High Sensitivity Using the Time-Resolved Longitudinal Spin Seebeck Effect
• Temperature dependence of the interface spin Seebeck effect
• Spin Seebeck effect in a simple ferromagnet near Tc: A Ginzburg-Landau approach
• Spin Seebeck effect and ballistic transport of quasi-acoustic magnons in room-temperature yttrium iron garnet films
• Thermoelastic enhancement of the magnonic spin Seebeck effect in thin films and bulk samples
• Influence of spin-orbit and spin-Hall effects on the spin Seebeck current beyond linear response
• Cryogenic spin Seebeck effect
• Damping of parametrically excited magnons in the presence of the longitudinal spin Seebeck effect
• Spin Seebeck effect and phonon energy transfer in heterostructures containing layers of a normal metal and a ferromagnetic insulator
• Electric control of emergent magnonic spin current and dynamic multiferroicity in magnetic insulators at finite temperatures
• Frequency-dependent Phonon-mediated Unidirectional Magnetoresistance in a Metal on an Insulator with Highly Nonequilibrium Magnons
• Spin Seebeck effect in two-sublattice ferrimagnets in the vicinity of $T_{\mathrm{C}}$