Improvement of Mixing Conductance and Spin-Seebeck Effect at Fe Interface Treatment. Issue 60 (10th May 2016)

• Record Type: Journal Article
• Authors: Iwasaki, Y.; Ishida, M.; Kirihara, A.; Ihara, K.; Someya, H.; Uchida, K.; Saitoh, E.; Murakami, T.; Yorozu, S.
• Is Part Of: MRS advances. Volume 1:Issue 60(2016)
• Page Start: 3959
• Page End: 3964
• Publication Date: 2016-05-10
• Subjects: spintronic, -- thermoelectric, -- energy generation; Electrical engineering -- Congresses; Physics -- Congresses; Materials -- Research -- Congresses; Materials science -- Congresses; 620.11
• DOI: 10.1557/adv.2016.331
• Languages: English
• ISSNs: 2059-8521

Abstract

ABSTRACT: In the previous work, it is reported that the Spin-Seebeck effect (SSE), which refer to the generation of a spin current from a temperature gradient, can be enhanced by Fe interface treatment. Here, we investigated the Fe thickness ( d Fe ) dependency of spin-Seebeck voltage ( V SSE ) and mixing conductance ( g r ) in Pt/Fe/Bi:YIG/SGGG system. As a result, magnitude of V SSE had a peak at d Fe ≓ 1 ML (monolayer, ≓ 0.3 mm), and also increase of g r was saturated at this point. It suggests that V SSE increase with increasing g r when d Fe is smaller than 1.0 ML. For the case in which d Fe is larger than 1.0ML, however, V SSE decreases due to a spin current decay in Fe layer with a constant g r . These experimental results are consistent with previous theoretical works.