Journal
APPLIED PHYSICS LETTERS
Volume 106, Issue 8, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4913531
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Funding
- JST, Japan
- MEXT, Japan [25707029, 26600067, 24244051, 26103005, 26790038]
- Tanikawa Fund Promotion of Thermal Technology
- Casio Science Promotion Foundation
- Iwatani Naoji Foundation
- Grants-in-Aid for Scientific Research [26790038, 26600067, 25707029, 26103005] Funding Source: KAKEN
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We report the longitudinal spin-Seebeck effects (LSSEs) for Pt/Fe70Cu30/BiY2Fe5O12 (BiYIG) and Pt/BiYIG devices. The LSSE voltage was found to be enhanced by inserting an ultra-thin Fe70Cu30 interlayer. This enhancement decays sharply with increasing the Fe70Cu30 thickness, suggesting that it is not due to bulk phenomena, such as a superposition of conventional thermoelectric effects, but due to interface effects related to the Fe70Cu30 interlayer. Combined with control experiments using Pt/Fe70Cu30 devices, we conclude that the enhancement of the LSSE voltage in the Pt/Fe70Cu30/BiYIG devices is attributed to the improvement of the spin-mixing conductance at the Pt/BiYIG interfaces. (C) 2015 AIP Publishing LLC.
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