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

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)222-227
Number of pages6
JournalMicroelectronics Journal
Volume39
Issue number2
DOIs
Publication statusPublished - 2008 Feb
Externally publishedYes

Fingerprint

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

Keywords

  • Carbon nano-peapod
  • Fullerenes
  • Luttinger liquids
  • Quantum dot
  • Shell filling
  • Single electron tunneling

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering

Cite this

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.

In: Microelectronics Journal, Vol. 39, No. 2, 02.2008, p. 222-227.

Research output: Contribution to journalArticle

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. In: Microelectronics Journal. 2008 ; Vol. 39, No. 2. pp. 222-227.
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AU - Harada, Y.

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