Electron transport through a linear tri-quantum-dot molecule Aharonov-Bohm interference

Jiyuan Bai; Zelong He; Li Li; Shujiang Ye; Weimin Sun

doi:10.1016/j.physb.2017.06.056

Electron transport through a linear tri-quantum-dot molecule Aharonov-Bohm interference

Jiyuan Bai
, Zelong He^*
, Li Li
, Shujiang Ye
, Weimin Sun

^*Corresponding author for this work

Harbin Engineering University
Heilongjiang Institute of Technology
Yangtze Normal University

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

6 Scopus citations

Abstract

Using the non-equilibrium Keldysh Green's function technique, electron transport properties through a two-terminal linear tri-quantum-dot molecule Aharonov-Bohm (A-B) interference are investigated. The conductance as a function of electron energy is numerically calculated. The influence of magnetic flux and interdot coupling strength on the conductance is researched. Fano resonances emerge in the conductance spectrum, and two bound states in the continuum form simultaneously when the interdot couplings take appropriate values. A conductance dip is observed and evolves into an antiresonance band with increasing magnetic flux. The system can be designed as a quantum switch by adjusting the intramolecular couplings.

Original language	English
Pages (from-to)	148-152
Number of pages	5
Journal	Physica B: Condensed Matter
Volume	521
DOIs	https://doi.org/10.1016/j.physb.2017.06.056
State	Published - 15 Sep 2017
Externally published	Yes

Keywords

Electron transport
Fano effect
Non-equilibrium Green's function
Quantum dot

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10.1016/j.physb.2017.06.056

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title = "Electron transport through a linear tri-quantum-dot molecule Aharonov-Bohm interference",

abstract = "Using the non-equilibrium Keldysh Green's function technique, electron transport properties through a two-terminal linear tri-quantum-dot molecule Aharonov-Bohm (A-B) interference are investigated. The conductance as a function of electron energy is numerically calculated. The influence of magnetic flux and interdot coupling strength on the conductance is researched. Fano resonances emerge in the conductance spectrum, and two bound states in the continuum form simultaneously when the interdot couplings take appropriate values. A conductance dip is observed and evolves into an antiresonance band with increasing magnetic flux. The system can be designed as a quantum switch by adjusting the intramolecular couplings.",

keywords = "Electron transport, Fano effect, Non-equilibrium Green's function, Quantum dot",

author = "Jiyuan Bai and Zelong He and Li Li and Shujiang Ye and Weimin Sun",

note = "Publisher Copyright: {\textcopyright} 2017 Elsevier B.V.",

year = "2017",

month = sep,

day = "15",

doi = "10.1016/j.physb.2017.06.056",

language = "英语",

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journal = "Physica B: Condensed Matter",

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TY - JOUR

T1 - Electron transport through a linear tri-quantum-dot molecule Aharonov-Bohm interference

AU - Bai, Jiyuan

AU - He, Zelong

AU - Li, Li

AU - Ye, Shujiang

AU - Sun, Weimin

PY - 2017/9/15

Y1 - 2017/9/15

N2 - Using the non-equilibrium Keldysh Green's function technique, electron transport properties through a two-terminal linear tri-quantum-dot molecule Aharonov-Bohm (A-B) interference are investigated. The conductance as a function of electron energy is numerically calculated. The influence of magnetic flux and interdot coupling strength on the conductance is researched. Fano resonances emerge in the conductance spectrum, and two bound states in the continuum form simultaneously when the interdot couplings take appropriate values. A conductance dip is observed and evolves into an antiresonance band with increasing magnetic flux. The system can be designed as a quantum switch by adjusting the intramolecular couplings.

AB - Using the non-equilibrium Keldysh Green's function technique, electron transport properties through a two-terminal linear tri-quantum-dot molecule Aharonov-Bohm (A-B) interference are investigated. The conductance as a function of electron energy is numerically calculated. The influence of magnetic flux and interdot coupling strength on the conductance is researched. Fano resonances emerge in the conductance spectrum, and two bound states in the continuum form simultaneously when the interdot couplings take appropriate values. A conductance dip is observed and evolves into an antiresonance band with increasing magnetic flux. The system can be designed as a quantum switch by adjusting the intramolecular couplings.

KW - Electron transport

KW - Fano effect

KW - Non-equilibrium Green's function

KW - Quantum dot

UR - https://www.scopus.com/pages/publications/85021378454

U2 - 10.1016/j.physb.2017.06.056

DO - 10.1016/j.physb.2017.06.056

M3 - 文章

AN - SCOPUS:85021378454

SN - 0921-4526

VL - 521

SP - 148

EP - 152

JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

ER -

Electron transport through a linear tri-quantum-dot molecule Aharonov-Bohm interference

Abstract

Keywords

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