Absence of anomalous Nernst effect in spin Seebeck effect of Pt/YIG

B. F. Miao; S. Y. Huang; D. Qu; C. L. Chien

doi:10.1063/1.4941340

AIP Advances (Jan 2016)

Absence of anomalous Nernst effect in spin Seebeck effect of Pt/YIG

B. F. Miao,
S. Y. Huang,
D. Qu,
C. L. Chien

Affiliations

B. F. Miao: National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China
S. Y. Huang: Department of Physics and Astronomy, Johns Hopkins University, Baltimore, MD 21218, USA
D. Qu: Department of Physics and Astronomy, Johns Hopkins University, Baltimore, MD 21218, USA
C. L. Chien: Department of Physics and Astronomy, Johns Hopkins University, Baltimore, MD 21218, USA

DOI: https://doi.org/10.1063/1.4941340
Journal volume & issue: Vol. 6, no. 1
pp. 015018 – 015018-6

Abstract

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The Pt/YIG structure has been widely used to study spin Seebeck effect (SSE), inverse spin Hall effect, and other pure spin current phenomena. However, the magnetic proximity effect in Pt when in contact with YIG, and the potential anomalous Nernst effect (ANE) may compromise the spin current phenomena in Pt/YIG. By inserting a Cu layer of various thicknesses between Pt and YIG, we have separated the signals from the SSE and that of the ANE. It is demonstrated that the thermal voltage in Pt/YIG mainly comes from spin current due to the longitudinal SSE with negligible contribution from the ANE.

Published in AIP Advances

ISSN: 2158-3226 (Online)
Publisher: AIP Publishing LLC
Country of publisher: United States
LCC subjects: Science: Physics
Website: http://aipadvances.aip.org/

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