Anomalous reversal of transverse thermoelectric voltage in CoδFe100-δ/YIG junction

R. Ramos, P. Wongjom, R. Iguchi, A. Yagmur, Z. Qiu, S. Pinitsoontorn, K. Uchida, E. Saitoh

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

We have studied thermoelectric conversion in all-ferromagnetic CoδFe100-δ/YIG bilayer junctions as a function of the chemical composition δ. We performed measurements of the transverse thermoelectric voltage upon application of a magnetic field. The voltage measured in the longitudinal spin Seebeck effect configuration shows a sign reversal at δ = 40%, which cannot be explained by the conventional electronic transport, such as the anomalous Nernst and Hall effects in the CoδFe100-δ layer. Our results suggest a possible role of the sd-type exchange interaction between Co40Fe60 and YIG at the interface as a possible origin for the observed behavior.

Original languageEnglish
Pages (from-to)134-138
Number of pages5
JournalJournal of Magnetism and Magnetic Materials
Volume447
DOIs
Publication statusPublished - 2018 Feb 1

Keywords

  • Anomalous Nernst effect
  • Spin Seebeck effect
  • Spin caloritronics
  • Spintronics

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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