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Anomalous Coulomb diamonds and power-law behavior sensitive to back-gate voltages in carbon nanoscale peapod quantum dots
http://hdl.handle.net/2237/11306
http://hdl.handle.net/2237/11306d23b946f-2e13-4f4c-9103-29b0d1a417ca
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
PhysRevB_75_205431.pdf (436.9 kB)
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2009-03-12 | |||||
| タイトル | ||||||
| タイトル | Anomalous Coulomb diamonds and power-law behavior sensitive to back-gate voltages in carbon nanoscale peapod quantum dots | |||||
| 言語 | en | |||||
| 著者 |
Mizubayashi, J.
× Mizubayashi, J.× Haruyama, J.× Takesue, I.× Okazaki, T.× Shinohara, H.× Harada, Y.× Awano, Y. |
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| アクセス権 | ||||||
| アクセス権 | open access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||
| 権利 | ||||||
| 言語 | en | |||||
| 権利情報 | American Physical Society, All rights reserved. | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | carbon nanotubes | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | quantum dots | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | fullerenes | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | diamond | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | electric admittance | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | Luttinger liquid | |||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | We report anomalous charging effect of single electrons (Coulomb diamonds) observed in carbon nanoscale peapod quantum dots that encapsulate a series of C60 molecules. We find that behaviors of diamonds are anomalously sensitive to back-gate voltages (V_bg), exhibiting two evidently different V_bg regions and a large polarity on V_bg. In particular, we find only a sequence of one large diamond followed by three smaller ones existing around ground state. Magnetic-field dependence indicates the presence of shell filling by spin singlet to doubly degenerate electronic levels for these. The encapsulated-C60 molecules indirectly affect this shell filling at low V_bg possibly via nearly free electrons. In contrast, they act as individual quantum dots coupled in series in high V_bg region. It directly contributes to highly overlapped very large diamonds. Moreover, we report power-law behaviors on conductance versus energy relationships observed in the same carbon nanoscale peapods. We find that the values of powers are also highly sensitive to applied V_bg with three different regions and anomalously high at high source-drain voltages. Because the power laws are found at voltages, which are the nearest outside of the above-mentioned fourfold Coulomb diamonds, correlation of the anomalous powers with orbital-related Tomonaga-Luttinger liquid is discussed. | |||||
| 言語 | en | |||||
| 出版者 | ||||||
| 出版者 | American Physical Society | |||||
| 言語 | en | |||||
| 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 | |||||
| 出版タイプ | ||||||
| 出版タイプ | VoR | |||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
| DOI | ||||||
| 関連タイプ | isVersionOf | |||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | https://doi.org/10.1103/PhysRevB.75.205431 | |||||
| ISSN | ||||||
| 収録物識別子タイプ | PISSN | |||||
| 収録物識別子 | 1098-0121 | |||||
| 書誌情報 |
en : PHYSICAL REVIEW B 巻 75, 号 20, p. 205431-205431, 発行日 2007-05 |
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| フォーマット | ||||||
| 値 | application/pdf | |||||
| 著者版フラグ | ||||||
| 値 | publisher | |||||
| URI | ||||||
| 識別子 | http://hdl.handle.net/2237/11306 | |||||
| 識別子タイプ | HDL | |||||
