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  1. B100 理学部/理学研究科
  2. B100a 雑誌掲載論文
  3. 学術雑誌

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/2237/11306
d23b946f-2e13-4f4c-9103-29b0d1a417ca
名前 / ファイル ライセンス アクション
PhysRevB_75_205431.pdf PhysRevB_75_205431.pdf (436.9 kB)
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.

WEKO 27308

en Mizubayashi, J.

Search repository
Haruyama, J.

× Haruyama, J.

WEKO 27309

en Haruyama, J.

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Takesue, I.

× Takesue, I.

WEKO 27310

en Takesue, I.

Search repository
Okazaki, T.

× Okazaki, T.

WEKO 27311

en Okazaki, T.

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Shinohara, H.

× Shinohara, H.

WEKO 27312

en Shinohara, H.

Search repository
Harada, Y.

× Harada, Y.

WEKO 27313

en Harada, Y.

Search repository
Awano, Y.

× Awano, Y.

WEKO 27314

en Awano, Y.

Search repository
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 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
内容記述タイプ Abstract
出版者
言語 en
出版者 American Physical Society
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
フォーマット
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
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