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arXiv · 2309.04932

Two-band Model with High Thermoelectric Power Factor and Its Application to FeSe Thin Film

Manaho Matsubara·Takahiro Yamamoto·Hidetoshi Fukuyama
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Abstract

We propose a simple theoretical model referred to as the {\it two-band model} to realize both a large Seebeck coefficient and high electrical conductivity, resulting in a high thermoelectric (TE) power factor ($PF$). Using the Kubo--Luttinger linear response theory, we apply this model to the TE response of an FeSe thin film reported by Shimizu {\it et al.} to show a high $PF$ with strong temperature dependence. The effects of superconducting fluctuations and excitonic correlations are found to not be critical.

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Manaho Matsubara, Takahiro Yamamoto, Hidetoshi Fukuyama. 2023-09-10. Two-band Model with High Thermoelectric Power Factor and Its Application to FeSe Thin Film. https://doi.org/10.7566/jpsj.92.104704

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