Quantitative Temperature Dependence of Longitudinal Spin Seebeck Effect at High Temperatures

Abstract

This article reports temperature-dependent measurements of longitudinal spin Seebeck effects (LSSEs) in Pt/Y${}_3$Fe${}_5$O${}_{12}$ (YIG)/Pt systems in a high temperature range from room temperature to above the Curie temperature of YIG. The experimental results show that the magnitude of the LSSE voltage in the Pt/YIG/Pt systems rapidly decreases with increasing the temperature and disappears above the Curie temperature. The critical exponent of the LSSE voltage in the Pt/YIG/Pt systems at the Curie temperature was estimated to be 3, which is much greater than that for the magnetization curve of YIG. This difference highlights the fact that the mechanism of the LSSE cannot be explained in terms of simple static magnetic properties in YIG.

9 pages, 5 figures, 1 table

References in corpus (10)

• Direct electronic measurement of the spin Hall effect
• Spin Seebeck insulator
• Observation of the Spin-Seebeck Effect in a Ferromagnetic Semiconductor
• Theory of magnon-driven spin Seebeck effect
• Longitudinal Spin Seebeck Effect Free from the Proximity Nernst Effect
• Electrical detection of spin pumping due to the precessing magnetization of a single ferromagnet
• Evolution of the spin Hall effect in Pt nanowires: Size and temperature effects
• Spin convertance at magnetic interfaces
• Spin Seebeck effect in antiferromagnets and compensated ferrimagnets
• Enhanced DC Spin Pumping into a Fluctuating Ferromagnet near Tc

Cited by in corpus (8)

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• Criteria for accurate determination of the magnon relaxation length from the nonlocal spin Seebeck effect
• 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
• Detection of induced paramagnetic moments in Pt on Y${}_3$Fe${}_5$O${}_{12}$ via x-ray magnetic circular dichroism
• Enhancement in Thermally Generated Spin Voltage at Pd/NiFe${}_2$O${}_4$ Interfaces by the Growth on Lattice-Matched Substrates
• Role of spin mixing conductance in determining thermal spin pumping near the ferromagnetic phase transition in EuO_{1-x} and La2NiMnO6