Influence of interface condition on spin-Seebeck effects
Z. Qiu, D. Hou, K. Uchida, and E. Saitoh
TL;DR
This study investigates how the interface quality between platinum and yttrium iron garnet affects the magnitude of the longitudinal spin-Seebeck effect, revealing that better interfaces produce stronger signals.
Contribution
It demonstrates the critical role of interface crystallinity in enhancing the spin-Seebeck effect in Pt/YIG bilayers, highlighting the importance of interface engineering.
Findings
Large LSSE voltage with crystalline interface
Steep voltage decay with amorphous interface
Interface condition significantly influences LSSE magnitude
Abstract
The longitudinal spin-Seebeck effect (LSSE) has been investigated for Pt/yttrium iron garnet (YIG) bilayer systems. The magnitude of the voltage induced by the LSSE is found to be sensitive to the Pt/YIG interface condition. We observed large LSSE voltage in a Pt/YIG system with a better crystalline interface, while the voltage decays steeply when an amorphous layer is introduced at the interface artificially.
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