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Universal band gap modulation by radial deformation in semiconductor single-walled carbon nanotubes
https://iwate-u.repo.nii.ac.jp/records/9683
https://iwate-u.repo.nii.ac.jp/records/9683a14686fb-ea80-436e-b96d-391921bc461d
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
prb-v78i19p195403.pdf (511.5 kB)
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| アイテムタイプ | 学術雑誌論文 / Journal Article(1) | |||||||||
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| 公開日 | 2009-01-09 | |||||||||
| タイトル | ||||||||||
| タイトル | Universal band gap modulation by radial deformation in semiconductor single-walled carbon nanotubes | |||||||||
| キーワード | ||||||||||
| 主題Scheme | Other | |||||||||
| 主題 | ab initio calculations | |||||||||
| キーワード | ||||||||||
| 主題Scheme | Other | |||||||||
| 主題 | carbon nanotubes | |||||||||
| キーワード | ||||||||||
| 主題Scheme | Other | |||||||||
| 主題 | conduction bands | |||||||||
| キーワード | ||||||||||
| 主題Scheme | Other | |||||||||
| 主題 | deformation | |||||||||
| キーワード | ||||||||||
| 主題Scheme | Other | |||||||||
| 主題 | energy gap | |||||||||
| キーワード | ||||||||||
| 主題Scheme | Other | |||||||||
| 主題 | semiconductor nanotubes | |||||||||
| 資源タイプ | ||||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||||
| 資源タイプ | journal article | |||||||||
| 著者 |
Nishidate, Kazume
× Nishidate, Kazume
× Hasegawa, Masayuki
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| 著者(機関) | ||||||||||
| 値 | Department of Electrical and Electronic Engineering | |||||||||
| 著者(機関) | ||||||||||
| 値 | Department of Materials Science and Engineering | |||||||||
| 登録日 | ||||||||||
| 日付 | 2009-01-09 | |||||||||
| 書誌情報 |
PHYSICAL REVIEW B 巻 78, 号 19, p. 195403-1-195403-6, 発行日 2008-01-01 |
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| ISSN | ||||||||||
| 収録物識別子タイプ | ISSN | |||||||||
| 収録物識別子 | 1098-0121 | |||||||||
| Abstract | ||||||||||
| 内容記述タイプ | Other | |||||||||
| 内容記述 | We report on a universal band gap modulation by radial deformation found for semiconductor single-walled carbon nanotubes (SWNTs). The plausible radial deformation of an individual SWNT under hydrostatic pressure is predicted using the method developed in the previous work [M. Hasegawa and K. Nishidate, Phys. Rev. B 74, 115401 (2006)]. It is found by ab initio electronic-structure calculations that the band gap of zigzag SWNTs is dictated by the shape of the high-curvature edge region of a deformed cross section perpendicular to the tube axis: If we let Rmin be an averaged curvature radius in that region, the band gap at the Γ point remains almost unchanged when Rmin≥3.2Å , and its closure occurs at Rmin≈2.4Å irrespective of tube size and cross-sectional shape as a whole. It is also confirmed that the band gap closure is accompanied by the concentration, in the high-curvature region, of the lowest conduction state at the Γ point. Possible implications of these results are discussed. | |||||||||
| 出版者 | ||||||||||
| 出版者 | American Physical Society | |||||||||
| 権利 | ||||||||||
| 権利情報 | ©2008 The American Physical Society | |||||||||
| DOI | ||||||||||
| 関連タイプ | isIdenticalTo | |||||||||
| 識別子タイプ | DOI | |||||||||
| 関連識別子 | 10.1103/PhysRevB.78.195403 | |||||||||
| 著者版フラグ | ||||||||||
| 出版タイプ | VoR | |||||||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||||
