Spin Seebeck devices using local on-chip heating

Abstract

A micro-patterned spin Seebeck device is fabricated using an on-chip heater. Current is driven through a Au heater layer electrically isolated from a bilayer consisting of Fe${}_3$O${}_4$ (insulating ferrimagnet) and a spin detector layer. It is shown that through this method it is possible to measure the longitudinal spin Seebeck effect (SSE) for small area magnetic devices, equivalent to traditional macroscopic SSE experiments. Using a lock-in detection technique it is possible to more sensitively characterize both the SSE and the anomalous Nernst effect (ANE), as well as the inverse spin Hall effect in various spin detector materials. By using the spin detector layer as a thermometer, we can obtain a value for the temperature gradient across the device. These results are well matched to values obtained through electromagnetic/thermal modeling of the device structure and with large area spin Seebeck measurements.

References in corpus (10)

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• Current heating induced spin Seebeck effect
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Cited by in corpus (13)

• Interface-Induced Phenomena in Magnetism
• Antiferromagnetic spin Seebeck Effect
• Thermoelectric generation based on spin Seebeck effects
• Longitudinal spin Seebeck coefficient: heat flux vs. temperature difference method
• Direct observation of magnon-phonon coupling in yttrium iron garnet
• Quantitative separation of the anisotropic magnetothermopower and planar Nernst effect by the rotation of an in-plane thermal gradient
• Mechanism of paramagnetic spin Seebeck effect
• Thermal spin injection and interface insensitivity in permalloy/aluminum metallic non-local spin valves
• Thermal effects in spintronic materials and devices: an experimentalist's guide
• Thermal spin current generation in the multifunctional ferrimagnet Ga${}_{0.6}$Fe${}_{1.4}$O${}_3$
• Nernst-Ettingshausen effect in thin Pt and W films at low temperatures
• Low temperature spin Seebeck effect in non-magnetic vanadium dioxide
• Spin Seebeck Effect in Correlated Antiferromagnetic V2O3