Atom-like behaviors and orbital-related Tomonaga-Luttinger liquids in carbon nano-peapod quantum dots

J. Mizubayashi, J. Haruyama, I. Takesue, T. Okazaki, H. Shinohara, Y. Harada, Yuji Awano

研究成果: Article

3 引用 (Scopus)

抄録

We report ballistic charge transport phenomena observed in carbon nano-peapod quantum dots. We find atom-like behaviors (shell filling) sensitive to applied back-gate voltages (Vbg) by single electron spectroscopy. Doubly degenerate electronic levels are found only around ground states at very low Vbg. Those correlations with the presence of nearly free electron states unique to the peapods are discussed. Moreover, we find power laws in conductance versus energy relationships with anomalously high values of power, which are strongly associated with shell filling to the doubly degenerate levels. It is investigated that the powers originate from Tomonaga-Luttinger liquid via the occupied doubly degenerate levels. These results imply that a ballistic charge transport is still preserved at low-Vbg regions in carbon nano-peapod quantum dots in spite of the presence of the encapsulated C60 molecules.

元の言語English
ページ(範囲)222-227
ページ数6
ジャーナルMicroelectronics Journal
39
発行部数2
DOI
出版物ステータスPublished - 2008 2
外部発表Yes

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Ballistics
ballistics
Semiconductor quantum dots
Charge transfer
Carbon
quantum dots
orbitals
Atoms
electronic levels
Electron spectroscopy
carbon
Liquids
liquids
electron states
Electron energy levels
Ground state
free electrons
electron spectroscopy
atoms
Molecules

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering

これを引用

Atom-like behaviors and orbital-related Tomonaga-Luttinger liquids in carbon nano-peapod quantum dots. / Mizubayashi, J.; Haruyama, J.; Takesue, I.; Okazaki, T.; Shinohara, H.; Harada, Y.; Awano, Yuji.

:: Microelectronics Journal, 巻 39, 番号 2, 02.2008, p. 222-227.

研究成果: Article

Mizubayashi, J, Haruyama, J, Takesue, I, Okazaki, T, Shinohara, H, Harada, Y & Awano, Y 2008, 'Atom-like behaviors and orbital-related Tomonaga-Luttinger liquids in carbon nano-peapod quantum dots', Microelectronics Journal, 巻. 39, 番号 2, pp. 222-227. https://doi.org/10.1016/j.mejo.2007.05.014
Mizubayashi, J. ; Haruyama, J. ; Takesue, I. ; Okazaki, T. ; Shinohara, H. ; Harada, Y. ; Awano, Yuji. / Atom-like behaviors and orbital-related Tomonaga-Luttinger liquids in carbon nano-peapod quantum dots. :: Microelectronics Journal. 2008 ; 巻 39, 番号 2. pp. 222-227.
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AU - Mizubayashi, J.

AU - Haruyama, J.

AU - Takesue, I.

AU - Okazaki, T.

AU - Shinohara, H.

AU - Harada, Y.

AU - Awano, Yuji

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N2 - We report ballistic charge transport phenomena observed in carbon nano-peapod quantum dots. We find atom-like behaviors (shell filling) sensitive to applied back-gate voltages (Vbg) by single electron spectroscopy. Doubly degenerate electronic levels are found only around ground states at very low Vbg. Those correlations with the presence of nearly free electron states unique to the peapods are discussed. Moreover, we find power laws in conductance versus energy relationships with anomalously high values of power, which are strongly associated with shell filling to the doubly degenerate levels. It is investigated that the powers originate from Tomonaga-Luttinger liquid via the occupied doubly degenerate levels. These results imply that a ballistic charge transport is still preserved at low-Vbg regions in carbon nano-peapod quantum dots in spite of the presence of the encapsulated C60 molecules.

AB - We report ballistic charge transport phenomena observed in carbon nano-peapod quantum dots. We find atom-like behaviors (shell filling) sensitive to applied back-gate voltages (Vbg) by single electron spectroscopy. Doubly degenerate electronic levels are found only around ground states at very low Vbg. Those correlations with the presence of nearly free electron states unique to the peapods are discussed. Moreover, we find power laws in conductance versus energy relationships with anomalously high values of power, which are strongly associated with shell filling to the doubly degenerate levels. It is investigated that the powers originate from Tomonaga-Luttinger liquid via the occupied doubly degenerate levels. These results imply that a ballistic charge transport is still preserved at low-Vbg regions in carbon nano-peapod quantum dots in spite of the presence of the encapsulated C60 molecules.

KW - Carbon nano-peapod

KW - Fullerenes

KW - Luttinger liquids

KW - Quantum dot

KW - Shell filling

KW - Single electron tunneling

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