Thickness dependence of spin Peltier effect visualized by thermal imaging technique

Abstract

Magnon propagation length in a ferrimagnetic insulator yttrium iron garnet (YIG) has been investigated by measuring and analyzing the YIG-thickness t_YIG dependence of the spin Peltier effect (SPE) in a Pt/YIG junction system. By means of the lock-in thermography technique, we measured the spatial distribution of the SPE-induced temperature modulation in the Pt/YIG system with the t_YIG gradation, allowing us to obtain the accurate t_YIG dependence of SPE with high t_YIG resolution. Based on the t_YIG dependence of SPE, we verified the applicability of several phenomenological models to estimate the magnon diffusion length in YIG.

10 pages, 4 figures

References in corpus (22)

• Spin Caloritronics
• Longitudinal Spin Seebeck Effect Free from the Proximity Nernst Effect
• Magnon spin transport driven by the magnon chemical potential in a magnetic insulator
• Local charge and spin currents in magnetothermal landscapes
• Observation of the spin Peltier effect
• Critical suppression of spin Seebeck effect by magnetic fields
• Determination of the origin of the spin Seebeck effect - bulk vs. interface effects
• Spin convertance at magnetic interfaces
• Thermal imaging of spin Peltier effect
• Origin of the thickness-dependent low-temperature enhancement of spin Seebeck effect in YIG films
• Two-Fluid Theory for Spin Superfluidity in Magnetic Insulators
• Evidence for the role of the magnon energy relaxation length in the Spin Seebeck Effect
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• Theory of spin Peltier effect
• Non-equilibrium thermodynamics of the spin Seebeck and spin Peltier effects
• Thermographic measurements of the spin Peltier effect in metal/yttrium-iron-garnet junction systems
• Time resolved spin Seebeck effect experiments
• Thermographic measurements of spin-current-induced temperature modulation in metallic bilayers
• Experimental proof of the reciprocal relation between spin Peltier and spin Seebeck effects in a bulk YIG/Pt bilayer
• Magnetic-field-induced suppression of spin Peltier effect in Pt/${\mathrm{Y}}_3\mathrm{F}{\mathrm{e}}_5{\mathrm{O}}_{12}$ system at room temperature
• Imaging Magnetization Structure and Dynamics in Ultrathin YIG/Pt Bilayers with High Sensitivity Using the Time-Resolved Longitudinal Spin Seebeck Effect
• Transient response of spin Peltier effect revealed by lock-in thermoreflectance measurement

Cited by in corpus (4)

• Spin and spin current -- From fundamentals to recent progress
• Spin Seebeck Effect: Sensitive Probe for Elementary Excitation, Spin Correlation, Transport, Magnetic Order, and Domains in Solids
• Spin Peltier effect and its length scale in Pt/YIG system at high temperatures
• Cryogenic spin Peltier effect detected by a RuO${}_2$-AlO${}_x$ on-chip microthermometer