Surface sensitivity of the spin Seebeck effect

A. Aqeel, I. J. Vera Marun, B. J. van Wees, T. T. M. Palstra

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    We have investigated the influence of the interface quality on the spin Seebeck effect (SSE) of the bilayer system yttrium iron garnet (YIG)-platinum (Pt). The magnitude and shape of the SSE is strongly influenced by mechanical treatment of the YIG single crystal surface. We observe that the saturation magnetic field (H-sat(SSE)) for the SSE signal increases from 55.3 mT to 72.8 mT with mechanical treatment. The change in the magnitude of H-sat(SSE) can be attributed to the presence of a perpendicular magnetic anisotropy due to the treatment induced surface strain or shape anisotropy in the Pt/YIG system. Our results show that the SSE is a powerful tool to investigate magnetic anisotropy at the interface.
    Original languageEnglish
    Pages (from-to)153705-1 - 153705-5
    JournalJournal of Applied Physics
    Issue number15
    Publication statusPublished - 21 Oct 2014



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