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

doi:10.1088/1674-1056/20/11/117303

中国物理B ›› 2011, Vol. 20 ›› Issue (11): 117303-117303.doi: 10.1088/1674-1056/20/11/117303

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

吕天全¹, 崔莲¹, 贺泽龙², 李林军², 薛惠杰³, 尹海涛⁴

(1)Center for Condensed-Matter Science and Technology, Harbin Institute of Technology, Harbin 150080, China; (2)Center for Condensed-Matter Science and Technology, Harbin Institute of Technology, Harbin 150080, China; Department of Electronic Engineering, Heilongjiang Institute of Technology, Harbin 150050, China; (3)Center for Condensed-Matter Science and Technology, Harbin Institute of Technology, Harbin 150080, China; School of Physics and Electronic Engineering, Harbin Normal University, Harbin 150025, China; (4)School of Physics and Electronic Engineering, Harbin Normal University, Harbin 150025, China

收稿日期:2011-02-24 修回日期:2011-06-19 出版日期:2011-11-15 发布日期:2011-11-15
基金资助:
Project supported by the Youth Foundation of Heilongjiang Province, China (Grant No. QC2009C41) and the Heilongjiang Provincial Natural Science Foundation, China (Grant No. F200939).

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

He Ze-Long(贺泽龙)^a)b), Lü Tian-Quan(吕天全)^a)^†, Cui Lian(崔莲)^a),Xue Hui-Jie(薛惠杰)^a)c), Li Lin-Jun(李林军)^a)b), and Yin Hai-Tao(尹海涛)^c)

^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

Received:2011-02-24 Revised:2011-06-19 Online:2011-11-15 Published:2011-11-15
Supported by:
Project supported by the Youth Foundation of Heilongjiang Province, China (Grant No. QC2009C41) and the Heilongjiang Provincial Natural Science Foundation, China (Grant No. F200939).

摘要/Abstract

摘要： 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 resonance peaks. In addition, the influence of Rashba spin-orbit interaction on the conductance is studied.

关键词: nonequilibrium Green's function, Fano effect, quantum dot, electronic transport

Abstract: 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 resonance peaks. In addition, the influence of Rashba spin-orbit interaction on the conductance is studied.

Key words: nonequilibrium Green's function, Fano effect, quantum dot, electronic transport

中图分类号: (Electronic transport in nanoscale materials and structures)

73.63.-b

73.23.-b (Electronic transport in mesoscopic systems) 05.60.Gg (Quantum transport)

贺泽龙, 吕天全, 崔莲, 薛惠杰, 李林军, 尹海涛. Fano effect of a parallel-coupled triple Rashba quantum dot system[J]. 中国物理B, 2011, 20(11): 117303-117303.

He Ze-Long(贺泽龙), Lü Tian-Quan(吕天全), Cui Lian(崔莲), Xue Hui-Jie(薛惠杰), Li Lin-Jun(李林军), and Yin Hai-Tao(尹海涛) . Fano effect of a parallel-coupled triple Rashba quantum dot system[J]. Chin. Phys. B, 2011, 20(11): 117303-117303.

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

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

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