Spin Seebeck effect in insulating epitaxial γ−Fe2O3 thin films

P. Jiménez-Cavero, I. Lucas, A. Anadón, R. Ramos, T. Niizeki, M. H. Aguirre, P. A. Algarabel, K. Uchida, M. R. Ibarra, E. Saitoh, L. Morellón

研究成果: Article査読

18 被引用数 (Scopus)

抄録

We report the fabrication of high crystal quality epitaxial thin films of maghemite (γ−Fe2O3), a classic ferrimagnetic insulating iron oxide. Spin Seebeck effect (SSE) measurements in γ−Fe2O3/Pt bilayers as a function of sample preparation conditions and temperature yield a SSE coefficient of 0.5(1) μV/K at room temperature. Dependence on temperature allows us to estimate the magnon diffusion length in maghemite to be in the range of tens of nanometers, in good agreement with that of conducting iron oxide magnetite (Fe3O4), establishing the relevance of spin currents of magnonic origin in magnetic iron oxides.

本文言語English
論文番号026103
ジャーナルAPL Materials
5
2
DOI
出版ステータスPublished - 2017 2 1

ASJC Scopus subject areas

  • 材料科学(全般)
  • 工学(全般)

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