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ID 57785
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Author
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
Abstract
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.
Published Date
2019-3-29
Publication Title
Scientific Reports
Volume
volume9
Publisher
Nature Publishing Group
Start Page
5376
ISSN
2045-2322
Content Type
Journal Article
language
英語
OAI-PMH Set
岡山大学
Copyright Holders
© The Author(s) 2019
File Version
publisher
PubMed ID
DOI
Web of Science KeyUT
Related Url
isVersionOf https://doi.org/10.1038/s41598-019-41906-7
License
https://creativecommons.org/licenses/by/4.0/
Funder Name
Ministry of Education, Culture, Sports, Science and Technology
助成番号
26105004
26400361
14J00228
17K05500