Quantitative temperature dependence of longitudinal spin seebeck effect at high temperatures

Ken ichi Uchida; Takashi Kikkawa; Asuka Miura; Junichiro Shiomi; Eiji Saitoh

doi:10.1103/PhysRevX.4.041023

Quantitative temperature dependence of longitudinal spin seebeck effect at high temperatures

Ken ichi Uchida, Takashi Kikkawa, Asuka Miura, Junichiro Shiomi, Eiji Saitoh

Research output: Contribution to journal › Article

66 Citations (Scopus)

Abstract

We report temperature-dependent measurements of longitudinal spin Seebeck effects (LSSEs) in Pt/Y₃Fe₅O₁₂ (YIG)/Pt systems in a high temperature range from room temperature to above the Curie temperature of YIG. The experimental results show that the magnitude of the LSSE voltage in the Pt/YIG/Pt systems rapidly decreases with increasing the temperature and disappears above the Curie temperature. The critical exponent of the LSSE voltage in the Pt/YIG/Pt systems at the Curie temperature is estimated to be 3, which is much greater than that for the magnetization curve of YIG. This difference highlights the fact that the mechanism of the LSSE cannot be explained in terms of simple static magnetic properties in YIG.

Original language	English
Article number	041023
Journal	Physical Review X
Volume	4
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevX.4.041023
Publication status	Published - 2014 Jan 1

Keywords

Condensed matter physics
Magnetism
Spintronics

ASJC Scopus subject areas

Physics and Astronomy(all)

Access to Document

10.1103/PhysRevX.4.041023

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Uchida, K. I., Kikkawa, T., Miura, A., Shiomi, J., & Saitoh, E. (2014). Quantitative temperature dependence of longitudinal spin seebeck effect at high temperatures. Physical Review X, 4(4), [041023]. https://doi.org/10.1103/PhysRevX.4.041023

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abstract = "We report temperature-dependent measurements of longitudinal spin Seebeck effects (LSSEs) in Pt/Y3Fe5O12 (YIG)/Pt systems in a high temperature range from room temperature to above the Curie temperature of YIG. The experimental results show that the magnitude of the LSSE voltage in the Pt/YIG/Pt systems rapidly decreases with increasing the temperature and disappears above the Curie temperature. The critical exponent of the LSSE voltage in the Pt/YIG/Pt systems at the Curie temperature is estimated to be 3, which is much greater than that for the magnetization curve of YIG. This difference highlights the fact that the mechanism of the LSSE cannot be explained in terms of simple static magnetic properties in YIG.",

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AU - Kikkawa, Takashi

AU - Miura, Asuka

AU - Shiomi, Junichiro

AU - Saitoh, Eiji

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