Absence of anomalous Nernst effect in spin Seebeck effect of Pt/YIG
Author(s) -
B. F. Miao,
S. Y. Huang,
Danru Qu,
C. L. Chien
Publication year - 2016
Publication title -
aip advances
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.421
H-Index - 58
ISSN - 2158-3226
DOI - 10.1063/1.4941340
Subject(s) - condensed matter physics , nernst equation , nernst effect , spin hall effect , thermoelectric effect , spin (aerodynamics) , materials science , spin current , current (fluid) , inverse , spin polarization , physics , electrode , electron , thermodynamics , geometry , mathematics , quantum mechanics
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
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