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arXiv · 2204.05482

Spin Peltier effect and its length scale in Pt/YIG system at high temperatures

Atsushi Takahagi·Takamasa Hirai·Ryo Iguchi·Keita Nakagawara·Hosei Nagano·Ken-ichi Uchida
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Abstract

The temperature and yttrium-iron-garnet (YIG) thickness dependences of the spin Peltier effect (SPE) have been investigated using a Pt/YIG junction system at temperatures ranging from room temperature to the Curie temperature of YIG by the lock-in thermography method. By analyzing the YIG thickness dependence using an exponential decay model, the characteristic length of SPE in YIG is estimated to be 0.9 $\mu$m near room temperature and almost constant even near the Curie temperature. The high-temperature behavior of SPE is clearly different from that of the spin Seebeck effect, providing a clue for microscopically understanding the reciprocal relation between them.

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Atsushi Takahagi, Takamasa Hirai, Ryo Iguchi, Keita Nakagawara, Hosei Nagano, Ken-ichi Uchida. 2022-04-12. Spin Peltier effect and its length scale in Pt/YIG system at high temperatures. https://doi.org/10.35848/1882-0786%2Fac6fae

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