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1 results

  • Improvement of Mixing Conductance and Spin-Seebeck Effect at Fe Interface Treatment

  • Y. Iwasaki, M. Ishida, A. Kirihara, K. Ihara, H. Someya, K. Uchida, E. Saitoh, T. Murakami, S. Yorozu
  • Journal:
    MRS Advances / Volume 1 / Issue 60 / 2016
    Published online by Cambridge University Press:
    10 May 2016, pp. 3959-3964
    Print publication:
    2016

  • 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.