Time-resolved measurement of Seebeck effect for superionic metals during structural phase transition
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arXiv
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| Main Authors: | , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866911398598017024 |
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| author | Li, Shilin Xia, Hailiang Ogasawara, Takuma Zhang, Liguo Tanigaki, Katsumi |
| author_facet | Li, Shilin Xia, Hailiang Ogasawara, Takuma Zhang, Liguo Tanigaki, Katsumi |
| contents | We propose a new time (t)-resolved method of both vertical- and horizontal-temperature gradients in an orthogonal configuration (t-resolved T(t)-HVOT) to have real interpretations of the enhancement in thermoelectric Seebeck effect (SE) observed during the structural phase transition. We apply our new method to superionic-state semiconductors of p-type Cu2Se and n-type Ag2S. The experimental data differentiate the two types of enhancements during the phase transition: a colossal SE (Scolossal), exhibiting an enormous value of up to 5 mV/K, and a slight enhancement in SE (Sstructure), approximately 1.5-2.0 times larger than those in the absence of the phase transition. We provide critical insights that both enhancements in SE arising during the structural phase transition are not intrinsic phenomena. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2509_06449 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Time-resolved measurement of Seebeck effect for superionic metals during structural phase transition Li, Shilin Xia, Hailiang Ogasawara, Takuma Zhang, Liguo Tanigaki, Katsumi Materials Science We propose a new time (t)-resolved method of both vertical- and horizontal-temperature gradients in an orthogonal configuration (t-resolved T(t)-HVOT) to have real interpretations of the enhancement in thermoelectric Seebeck effect (SE) observed during the structural phase transition. We apply our new method to superionic-state semiconductors of p-type Cu2Se and n-type Ag2S. The experimental data differentiate the two types of enhancements during the phase transition: a colossal SE (Scolossal), exhibiting an enormous value of up to 5 mV/K, and a slight enhancement in SE (Sstructure), approximately 1.5-2.0 times larger than those in the absence of the phase transition. We provide critical insights that both enhancements in SE arising during the structural phase transition are not intrinsic phenomena. |
| title | Time-resolved measurement of Seebeck effect for superionic metals during structural phase transition |
| topic | Materials Science |
| url | https://arxiv.org/abs/2509.06449 |