Thickness dependence of spin Peltier effect visualized by thermal imaging technique

Shunsuke Daimon, Ken Ichi Uchida, Naomi Ujiie, Yasuyuki Hattori, Rei Tsuboi, Eiji Saitoh

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7 Citations (Scopus)


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.

Original languageEnglish
Article number103001
JournalApplied Physics Express
Issue number10
Publication statusPublished - 2020 Oct 1


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