Thickness dependence of spin Peltier effect visualized by thermal imaging technique

Shunsuke Daimon; Ken-ichi Uchida; Naomi Ujiie; Yasuyuki Hattori; Rei Tsuboi; Eiji Saitoh

doi:10.35848/1882-0786/abb2b5

Thickness dependence of spin Peltier effect visualized by thermal imaging technique

Materials Science 2020-10-28 v3 Mesoscale and Nanoscale Physics

Authors: Shunsuke Daimon , Ken-ichi Uchida , Naomi Ujiie , Yasuyuki Hattori , Rei Tsuboi , Eiji Saitoh

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Abstract

Magnon propagation length in a ferrimagnetic insulator yttrium iron garnet (YIG) has been investigated by measuring and analyzing the YIG-thickness t_YIG dependence of the spin Peltier effect (SPE) in a Pt/YIG junction system. By means of the lock-in thermography technique, we measured the spatial distribution of the SPE-induced temperature modulation in the Pt/YIG system with the t_YIG gradation, allowing us to obtain the accurate t_YIG dependence of SPE with high t_YIG resolution. Based on the t_YIG dependence of SPE, we verified the applicability of several phenomenological models to estimate the magnon diffusion length in YIG.

Keywords

spin transport

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@article{arxiv.1906.01560,
  title  = {Thickness dependence of spin Peltier effect visualized by thermal imaging technique},
  author = {Shunsuke Daimon and Ken-ichi Uchida and Naomi Ujiie and Yasuyuki Hattori and Rei Tsuboi and Eiji Saitoh},
  journal= {arXiv preprint arXiv:1906.01560},
  year   = {2020}
}

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10 pages, 4 figures

Thickness dependence of spin Peltier effect visualized by thermal imaging technique

Abstract

Keywords

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