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 journalArticle

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 languageEnglish
Article number041023
JournalPhysical Review X
Volume4
Issue number4
DOIs
Publication statusPublished - 2014 Jan 1

Keywords

  • Condensed matter physics
  • Magnetism
  • Spintronics

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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