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