Surface sensitivity of the spin Seebeck effect

descriptionPublicationkeyboard_double_arrow_right Article , Preprint , Other literature type 16 Oct 2014Embargo end date: 01 Dec 2014 Netherlands, Germany, United Kingdom, United Kingdom English Publisher:AIP PublishingJournal:Journal of Applied Physics, volume 116 (issn: 0021-8979, eissn: 1089-7550,

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Authors: Vera Marun, Ivan; id_orcid 0000-0002-6347-580X; Aqeel, A; Vera-Marun, I J; Wees, B J van; Palstra, T T M;

doi: 10.1063/1.4897933 , 10.48550/arxiv.1412.7712

arXiv: 1412.7712

handle: 11370/d0a1c9ce-6d8b-471f-9123-abdf8a24d87c

Surface sensitivity of the spin Seebeck effect

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Abstract

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 (HsatSSE) for the SSE signal increases from 55.3 mT to 72.8 mT with mechanical treatment. The change in the magnitude of HsatSSE 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.

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Netherlands, Germany, United Kingdom, United Kingdom

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Keywords

Condensed Matter - Materials Science, Surface measurements, INSULATOR, Polishing, ddc:530, Surface grinding, Materials Science (cond-mat.mtrl-sci), FOS: Physical sciences, Mine, Diamond, Thermoelectric effects

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