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Observation of the spin Seebeck effect in epitaxial Fe3O4 thin films

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arxiv 1212.3142 v1 pith:KZ2NAOCE submitted 2012-12-13 cond-mat.mtrl-sci

R. Ramos , T. Kikkawa , K. Uchida , H. Adachi , I. Lucas , M. H. Aguirre , P. Algarabel , L. Morellon
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S. Maekawa E. Saitoh M. R. Ibarra
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classification cond-mat.mtrl-sci
keywords effectfe3o4layerseebeckspincontributionfilmsfound
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We report the first experimental observation of the spin Seebeck effect in magnetite thin films. The signal observed at temperatures above the Verwey transition is a contribution from both the anomalous Nernst (ANE) and spin Seebeck effects (SSE). The contribution from the ANE of the Fe3O4 layer to the SSE is found to be negligible due to the resistivity difference between Fe3O4 and Pt layers. Below the Verwey transition the SSE is free from the ANE of the ferromagnetic layer and it is also found to dominate over the ANE due to magnetic proximity effect on the Pt layer.

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