Electric detection of the spin-Seebeck effect in magnetic insulator in the presence of interface barrier

K. Uchida, T. Ota, Y. Kajiwara, H. Umezawa, H. Kawai, E. Saitoh

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2 Citations (Scopus)

Abstract

The spin-Seebeck effect (SSE), the spin-voltage generation as a result of a temperature gradient, has recently been observed in ferrimagnetic insulator LaY2Fe5O12 films by means of the inverse spin-Hall effect in Pt films. Here we investigate the SSE using LaY 2Fe5O12/SiO2(Cu)/Pt systems, where the LaY2Fe5O12 and Pt layers are separated by SiO2 (Cu) thin-film barriers. The experimental results show that the SSE signal disappears in the LaY2Fe5O12/ SiO2/Pt system, but the finite signal appears in the LaY 2Fe5O12/Cu/Pt system, indicating that the direct contacts between the LaY2Fe5O12 and normal metals is necessary for generating the SSE signal.

Original languageEnglish
Article number012096
JournalJournal of Physics: Conference Series
Volume303
Issue number1
DOIs
Publication statusPublished - 2011

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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