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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

Exciton Transport in the Electron–Hole System Ta2NiSe5

http://hdl.handle.net/2237/00031500
9b684fe3-80a3-4f8e-99e1-47e1377fccc3
名前 / ファイル ライセンス アクション
maintext_revised.pdf maintext_revised (499.0 kB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2020-02-13
タイトル
タイトル Exciton Transport in the Electron–Hole System Ta2NiSe5
著者 Nakano, Akitoshi

× Nakano, Akitoshi

WEKO 95979

Nakano, Akitoshi

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Nagai, Takayuki

× Nagai, Takayuki

WEKO 95980

Nagai, Takayuki

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Katayama, Naoyuki

× Katayama, Naoyuki

WEKO 95981

Katayama, Naoyuki

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Sawa, Hiroshi

× Sawa, Hiroshi

WEKO 95982

Sawa, Hiroshi

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Taniguchi, Hiroki

× Taniguchi, Hiroki

WEKO 95983

Taniguchi, Hiroki

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Terasaki, Ichiro

× Terasaki, Ichiro

WEKO 95984

Terasaki, Ichiro

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権利
権利情報 Copyright ©2019 The Physical Society of Japan 日本物理学会
抄録
内容記述 We have measured the dielectric constant and thermopower of single crystal samples of the excitonic insulator candidate Ta2NiSe5. The dielectric constant below 50 K shows relaxor-like relaxation, implying the existence of randomly distributed electric dipoles. We have evaluated the concentration of the dipoles to be 10^19 cm^−3 at 30 K, which gives a rough estimate of the exciton concentration in this compound. A large thermopower of 600 µV/K at 100 K suddenly drops toward zero down to 50 K, and this zero thermopower evidences the neutral particles flow against the applied temperature gradient. We have semi-quantitatively explained the above two anomalies in terms of spontaneously generated excitons at low temperatures where thermally excited holes are quenched.
内容記述タイプ Abstract
内容記述
内容記述 ファイル公開:2020/11/15
内容記述タイプ Other
出版者
出版者 日本物理学会
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
DOI
関連識別子
識別子タイプ DOI
関連識別子 https://doi.org/10.7566/JPSJ.88.113706
ISSN(print)
収録物識別子タイプ ISSN
収録物識別子 0031-9015
書誌情報 Journal of the Physical Society of Japan

巻 88, 号 11, p. 113706, 発行日 2019-11-15
著者版フラグ
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