Nonequilibrium Transport Properties in One-Dimensional Array of Quantum Dots

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Nonequilibrium transport properties are studied in one-dimensional arrays of metallic quantum dots connected in series, taking account of the long-range charging effect. The current and its fluctuation are calculated by solving the Master equation and by performing the Monte Carlo simulation. When the array is smaller than the interaction range, charges can be transported, one by one, at low bias voltages. The transport properties have rich structures, reflecting a regular or irregular motion of charges, as functions of the gate voltage. When the array is larger than the interaction range, more than one charges move collectively due to the interaction with each other. The correlation results in a large peak in the current fluctuation spectrum. With increasing bias voltage, the characteristic features disappear, and the current fluctuation goes to a constant level which is 1/(N + 1) of the classical shot noise, in an array of N dots.

Original languageEnglish
Pages (from-to)2952-2962
Number of pages11
JournalJournal of the Physical Society of Japan
Volume65
Issue number9
Publication statusPublished - 1996

Fingerprint

transport properties
quantum dots
electric potential
interactions
shot noise
charging
simulation

Keywords

  • Charge soliton
  • Charging effect
  • Coulomb blockade
  • Current noise
  • Mesoscopic system
  • Quantum dot

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Nonequilibrium Transport Properties in One-Dimensional Array of Quantum Dots. / Eto, Mikio.

In: Journal of the Physical Society of Japan, Vol. 65, No. 9, 1996, p. 2952-2962.

Research output: Contribution to journalArticle

@article{70b355a038aa4c9dbbe9998fef3ad57b,
title = "Nonequilibrium Transport Properties in One-Dimensional Array of Quantum Dots",
abstract = "Nonequilibrium transport properties are studied in one-dimensional arrays of metallic quantum dots connected in series, taking account of the long-range charging effect. The current and its fluctuation are calculated by solving the Master equation and by performing the Monte Carlo simulation. When the array is smaller than the interaction range, charges can be transported, one by one, at low bias voltages. The transport properties have rich structures, reflecting a regular or irregular motion of charges, as functions of the gate voltage. When the array is larger than the interaction range, more than one charges move collectively due to the interaction with each other. The correlation results in a large peak in the current fluctuation spectrum. With increasing bias voltage, the characteristic features disappear, and the current fluctuation goes to a constant level which is 1/(N + 1) of the classical shot noise, in an array of N dots.",
keywords = "Charge soliton, Charging effect, Coulomb blockade, Current noise, Mesoscopic system, Quantum dot",
author = "Mikio Eto",
year = "1996",
language = "English",
volume = "65",
pages = "2952--2962",
journal = "Journal of the Physical Society of Japan",
issn = "0031-9015",
publisher = "Physical Society of Japan",
number = "9",

}

TY - JOUR

T1 - Nonequilibrium Transport Properties in One-Dimensional Array of Quantum Dots

AU - Eto, Mikio

PY - 1996

Y1 - 1996

N2 - Nonequilibrium transport properties are studied in one-dimensional arrays of metallic quantum dots connected in series, taking account of the long-range charging effect. The current and its fluctuation are calculated by solving the Master equation and by performing the Monte Carlo simulation. When the array is smaller than the interaction range, charges can be transported, one by one, at low bias voltages. The transport properties have rich structures, reflecting a regular or irregular motion of charges, as functions of the gate voltage. When the array is larger than the interaction range, more than one charges move collectively due to the interaction with each other. The correlation results in a large peak in the current fluctuation spectrum. With increasing bias voltage, the characteristic features disappear, and the current fluctuation goes to a constant level which is 1/(N + 1) of the classical shot noise, in an array of N dots.

AB - Nonequilibrium transport properties are studied in one-dimensional arrays of metallic quantum dots connected in series, taking account of the long-range charging effect. The current and its fluctuation are calculated by solving the Master equation and by performing the Monte Carlo simulation. When the array is smaller than the interaction range, charges can be transported, one by one, at low bias voltages. The transport properties have rich structures, reflecting a regular or irregular motion of charges, as functions of the gate voltage. When the array is larger than the interaction range, more than one charges move collectively due to the interaction with each other. The correlation results in a large peak in the current fluctuation spectrum. With increasing bias voltage, the characteristic features disappear, and the current fluctuation goes to a constant level which is 1/(N + 1) of the classical shot noise, in an array of N dots.

KW - Charge soliton

KW - Charging effect

KW - Coulomb blockade

KW - Current noise

KW - Mesoscopic system

KW - Quantum dot

UR - http://www.scopus.com/inward/record.url?scp=0030510809&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0030510809&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0030510809

VL - 65

SP - 2952

EP - 2962

JO - Journal of the Physical Society of Japan

JF - Journal of the Physical Society of Japan

SN - 0031-9015

IS - 9

ER -