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; Y. Awano

doi:10.1016/j.mejo.2007.05.014

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, Y. Awano

Research output: Contribution to journal › Article › peer-review

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 (V_bg) by single electron spectroscopy. Doubly degenerate electronic levels are found only around ground states at very low V_bg. 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-V_bg regions in carbon nano-peapod quantum dots in spite of the presence of the encapsulated C₆₀ molecules.

Original language	English
Pages (from-to)	222-227
Number of pages	6
Journal	Microelectronics Journal
Volume	39
Issue number	2
DOIs	https://doi.org/10.1016/j.mejo.2007.05.014
Publication status	Published - 2008 Feb
Externally published	Yes

Keywords

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

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Condensed Matter Physics
Surfaces, Coatings and Films
Electrical and Electronic Engineering

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10.1016/j.mejo.2007.05.014

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

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.",

keywords = "Carbon nano-peapod, Fullerenes, Luttinger liquids, Quantum dot, Shell filling, Single electron tunneling",

author = "J. Mizubayashi and J. Haruyama and I. Takesue and T. Okazaki and H. Shinohara and Y. Harada and Y. Awano",

year = "2008",

month = feb,

doi = "10.1016/j.mejo.2007.05.014",

language = "English",

volume = "39",

pages = "222--227",

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T1 - Atom-like behaviors and orbital-related Tomonaga-Luttinger liquids in carbon nano-peapod quantum dots

AU - Mizubayashi, J.

AU - Haruyama, J.

AU - Takesue, I.

AU - Okazaki, T.

AU - Shinohara, H.

AU - Harada, Y.

AU - Awano, Y.

PY - 2008/2

Y1 - 2008/2

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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JF - Microelectronics Journal

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

Abstract

Keywords

ASJC Scopus subject areas

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