Effect of interlevel Coulomb interactions on the tunneling current through a single quantum dot

David M.T. Kuo

doi:10.1016/j.physe.2004.12.005

Effect of interlevel Coulomb interactions on the tunneling current through a single quantum dot

David M.T. Kuo

Department of Electrical Engineering

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

2 Scopus citations

Abstract

The tunneling current through a quantum dot (QD) embedded in SiO2 matrix is studied theoretically. The energy levels and Coulomb interactions of electrons in a nanometer QD are calculated using an effective mass model. The tunneling current of a QD is calculated using the Keldysh-Green function method and two-level Anderson model. In addition to four peaks arising from the intralevel Coulomb interactions, extra differential conductance peaks are found due to the interlevel Coulomb interactions and the statistical nature of the open system.

Original language	English
Pages (from-to)	355-361
Number of pages	7
Journal	Physica E: Low-Dimensional Systems and Nanostructures
Volume	27
Issue number	3
DOIs	https://doi.org/10.1016/j.physe.2004.12.005
State	Published - Apr 2005

Keywords

Coulomb interactions
Green's function
Quantum dots
Tunneling current

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10.1016/j.physe.2004.12.005

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title = "Effect of interlevel Coulomb interactions on the tunneling current through a single quantum dot",

abstract = "The tunneling current through a quantum dot (QD) embedded in SiO2 matrix is studied theoretically. The energy levels and Coulomb interactions of electrons in a nanometer QD are calculated using an effective mass model. The tunneling current of a QD is calculated using the Keldysh-Green function method and two-level Anderson model. In addition to four peaks arising from the intralevel Coulomb interactions, extra differential conductance peaks are found due to the interlevel Coulomb interactions and the statistical nature of the open system.",

keywords = "Coulomb interactions, Green's function, Quantum dots, Tunneling current",

author = "Kuo, {David M.T.}",

note = "Funding Information: This work was supported by the National Science Council of Republic of China Contract NSC-93-2215-E-008-014 and NSC 93-2120-M-008-001. ",

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T1 - Effect of interlevel Coulomb interactions on the tunneling current through a single quantum dot

AU - Kuo, David M.T.

N1 - Funding Information: This work was supported by the National Science Council of Republic of China Contract NSC-93-2215-E-008-014 and NSC 93-2120-M-008-001.

PY - 2005/4

Y1 - 2005/4

N2 - The tunneling current through a quantum dot (QD) embedded in SiO2 matrix is studied theoretically. The energy levels and Coulomb interactions of electrons in a nanometer QD are calculated using an effective mass model. The tunneling current of a QD is calculated using the Keldysh-Green function method and two-level Anderson model. In addition to four peaks arising from the intralevel Coulomb interactions, extra differential conductance peaks are found due to the interlevel Coulomb interactions and the statistical nature of the open system.

AB - The tunneling current through a quantum dot (QD) embedded in SiO2 matrix is studied theoretically. The energy levels and Coulomb interactions of electrons in a nanometer QD are calculated using an effective mass model. The tunneling current of a QD is calculated using the Keldysh-Green function method and two-level Anderson model. In addition to four peaks arising from the intralevel Coulomb interactions, extra differential conductance peaks are found due to the interlevel Coulomb interactions and the statistical nature of the open system.

KW - Coulomb interactions

KW - Green's function

KW - Quantum dots

KW - Tunneling current

UR - http://www.scopus.com/inward/record.url?scp=15344340594&partnerID=8YFLogxK

U2 - 10.1016/j.physe.2004.12.005

DO - 10.1016/j.physe.2004.12.005

M3 - 期刊論文

AN - SCOPUS:15344340594

SN - 1386-9477

VL - 27

SP - 355

EP - 361

JO - Physica E: Low-Dimensional Systems and Nanostructures

JF - Physica E: Low-Dimensional Systems and Nanostructures

IS - 3

ER -

Effect of interlevel Coulomb interactions on the tunneling current through a single quantum dot

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Keywords

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