Interface-induced anomalous Nernst effect in Fe3O4/Pt-based heterostructures

R. Ramos, Takashi Kikkawa, A. Anadón, I. Lucas, Tomohiko Niizeki, Kenichi Uchida, P. A. Algarabel, L. Morellón, M. H. Aguirre, M. R. Ibarra, Eiji Saitoh

Research output: Contribution to journalArticlepeer-review

Abstract

We have studied the anomalous Nernst effect (ANE) in [Fe3O4/Pt]-based heterostructures, by measuring the ANE-induced electric field with a magnetic field applied normal to the sample surface, in the perpendicular magnetized configuration, where only the ANE is expected. An ANE voltage is observed for [Fe3O4/Pt]nmultilayers, and we further investigated its origin by performing measurements in [Fe3O4/Pt/Fe3O4] trilayers as a function of the Pt thickness. Our results suggest the presence of an interface-induced ANE. Despite of this ANE, the spin Seebeck effect is the dominant mechanism for the transverse thermoelectric voltage in the in-plane magnetized configuration, accounting for about 70 % of the measured voltage in the multilayers.

Original languageEnglish
JournalUnknown Journal
Publication statusPublished - 2018 Sep 28

ASJC Scopus subject areas

  • General

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