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ID 57785
フルテキストURL
著者
Uesugi, Eri Research Institute for Interdisciplinary Science, Okayama University
Uchiyama, Takaki Research Institute for Interdisciplinary Science, Okayama University
Goto, Hidenori Research Institute for Interdisciplinary Science, Okayama University Kaken ID
Ota, Hiromi Advanced Science Research Centre, Okayama University
Ueno, Teppei Research Institute for Interdisciplinary Science, Okayama University
Fujiwara, Hirokazu Research Institute for Interdisciplinary Science, Okayama University
Terashima, Kensei Research Institute for Interdisciplinary Science, Okayama University Kaken ID
Yokoya, Takayoshi Research Institute for Interdisciplinary Science, Okayama University ORCID Kaken ID
Matsui, Fumihiko Graduate School of Materials Science, Nara Institute of Science and Technology
Akimitsu, Jun Research Institute for Interdisciplinary Science, Okayama University
Kobayashi, Kaya Research Institute for Interdisciplinary Science, Okayama University ORCID Kaken ID publons
Kubozono, Yoshihiro Research Institute for Interdisciplinary Science, Okayama University Kaken ID publons
抄録
The temperature dependence of the resistivity (rho) of Ag-doped Bi2Se3 (AgxBi2-xSe3) shows insulating behavior above 35 K, but below 35 K, rho suddenly decreases with decreasing temperature, in contrast to the metallic behavior for non-doped Bi2Se3 at 1.5-300 K. This significant change in transport properties from metallic behavior clearly shows that the Ag doping of Bi2Se3 can effectively tune the Fermi level downward. The Hall effect measurement shows that carrier is still electron in AgxBi2-xSe3 and the electron density changes with temperature to reasonably explain the transport properties. Furthermore, the positive gating of AgxBi2-xSe3 provides metallic behavior that is similar to that of non-doped Bi2Se3, indicating a successful upward tuning of the Fermi level.
発行日
2019-3-29
出版物タイトル
Scientific Reports
9巻
出版者
Nature Publishing Group
開始ページ
5376
ISSN
2045-2322
資料タイプ
学術雑誌論文
言語
English
OAI-PMH Set
岡山大学
著作権者
© The Author(s) 2019
論文のバージョン
publisher
PubMed ID
DOI
Web of Science KeyUT
関連URL
isVersionOf https://doi.org/10.1038/s41598-019-41906-7
ライセンス
https://creativecommons.org/licenses/by/4.0/
助成機関名
文部科学省
助成番号
26105004
26400361
14J00228
17K05500