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  1. B100 理学部/理学研究科
  2. B100a 雑誌掲載論文
  3. 学術雑誌

Interplay between quantum paraelectricity and thermoelectricity in the photo-Seebeck effect in a SrTiO3 single crystal

http://hdl.handle.net/2237/00030886
http://hdl.handle.net/2237/00030886
72732e9c-934a-4fd3-803c-e7d52ea646b8
名前 / ファイル ライセンス アクション
1_5106384.pdf 1_5106384 (1.7 MB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2019-11-14
タイトル
タイトル Interplay between quantum paraelectricity and thermoelectricity in the photo-Seebeck effect in a SrTiO3 single crystal
言語 en
著者 Shiraishi, Yuuka

× Shiraishi, Yuuka

WEKO 94202

en Shiraishi, Yuuka

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Tanabe, Kenji

× Tanabe, Kenji

WEKO 94203

en Tanabe, Kenji

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Taniguchi, Hiroki

× Taniguchi, Hiroki

WEKO 94204

en Taniguchi, Hiroki

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Okazaki, Ryuji

× Okazaki, Ryuji

WEKO 94205

en Okazaki, Ryuji

Search repository
Terasaki, Ichiro

× Terasaki, Ichiro

WEKO 94206

en Terasaki, Ichiro

Search repository
アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
権利
言語 en
権利情報 Copyright 2019 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing.The following article appeared in (Journal of Applied Physics. v.126, 2019, p.045111) and may be found at (http://dx.doi.org/10.1063/1.5106384).
抄録
内容記述 We report the electrical conductivity and the Seebeck coefficient of a SrTiO3 single crystal under 405-nm laser illumination from 10 to 30 K. We find that the photoconductivity exponentially increases with decreasing temperature, suggesting a gradual metal-insulator transition. Assuming the carrier mobility reported in the preceding studies, we have evaluated the carrier concentration to be 8×10^9cm^−3 at maximum, which corresponds to 10^−7ppm impurities in the case of chemical doping. Such ultralow doping is realized only when the energy of the incident light is slightly lower than the bandgap. In this situation, the incident light penetrates the whole sample with a small probability of electron–hole creation. We find that the observed photo-Seebeck coefficient seriously disagrees with the calculated values from the carrier concentration. In order to remedy this discrepancy, we have proposed a phenomenological model in which the quantum paraelectric behavior of SrTiO3 screens the thermoelectric voltage.
言語 en
内容記述タイプ Abstract
内容記述
内容記述 ファイル公開:2020-07-29
言語 ja
内容記述タイプ Other
出版者
言語 en
出版者 AIP Publishing
言語
言語 eng
資源タイプ
資源タイプresource http://purl.org/coar/resource_type/c_6501
タイプ journal article
出版タイプ
出版タイプ VoR
出版タイプResource http://purl.org/coar/version/c_970fb48d4fbd8a85
DOI
関連タイプ isVersionOf
識別子タイプ DOI
関連識別子 https://doi.org/10.1063/1.5106384
ISSN(print)
収録物識別子タイプ PISSN
収録物識別子 0021-8979
書誌情報 en : Journal of Applied Physics

巻 126, 号 4, p. 045111, 発行日 2019-07
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