Fano effect of a parallel-coupled triple Rashba quantum dot system

Using the nonequilibrium Keldysh Green＇s function technique, the Fano effect of a parallel-coupled triple Rashba quantum dot system is investigated. The conductance as a function of electron energy is numerically calculated. Compared with the case of a parallel-coupled double quantum dot system, two...

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Published inChinese physics B Vol. 20; no. 11; pp. 456 - 463
Main Author 贺泽龙 吕天全 崔莲 薛惠杰 李林军 尹海涛
Format Journal Article
LanguageEnglish
Published IOP Publishing 01.11.2011
Subjects
Conductance
Electron energy
Green's functions
Mathematical analysis
Mathematical models
Quantum dots
Spin-orbit interactions
平行耦合
数值计算
电子能量
系统
结构参数
耦合双量子点
自旋轨道相互作用
非平衡格林函数
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ISSN1674-1056
2058-3834
DOI10.1088/1674-1056/20/11/117303

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Summary:Using the nonequilibrium Keldysh Green＇s function technique, the Fano effect of a parallel-coupled triple Rashba quantum dot system is investigated. The conductance as a function of electron energy is numerically calculated. Compared with the case of a parallel-coupled double quantum dot system, two additional Fano resonance peaks occur in the conductance spectrum. By adjusting the structural parameters, the two Fano resonance peaks may change into the resoaance peaks. In addition, the influence of Rashba spin-orbit interaction on the conductance is studied.
Bibliography:nonequilibrium Green＇s function; Fano effect; quantum dot; electronic transport
He Ze-Long,Lu Tian-Quan,Cui Lian,Xue Hui-Jie,Li Lin-Jun,Yin Hai-Tao（a） Center for Condensed-Matter Science and Technology, Harbin Institute of Technology, Harbin 150080, China ; b） Department of Electronic Engineering, Heilongjiang Institute of Technology, Harbin 150050, China ;c） School of Physics and Electronic Engineering, Harbin Normal University, Harbin 150025, China
11-5639/O4
Using the nonequilibrium Keldysh Green＇s function technique, the Fano effect of a parallel-coupled triple Rashba quantum dot system is investigated. The conductance as a function of electron energy is numerically calculated. Compared with the case of a parallel-coupled double quantum dot system, two additional Fano resonance peaks occur in the conductance spectrum. By adjusting the structural parameters, the two Fano resonance peaks may change into the resoaance peaks. In addition, the influence of Rashba spin-orbit interaction on the conductance is studied.
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ISSN:1674-1056
2058-3834
DOI:10.1088/1674-1056/20/11/117303