| 点间耦合强度对平行耦合三量子点体系电导的影响 |
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| 引用本文： | 贺泽龙,张迪,白云峰. 点间耦合强度对平行耦合三量子点体系电导的影响[J]. 黑龙江工程学院学报, 2012, 0(4): 52-54 |
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| 作者姓名： | 贺泽龙 张迪 白云峰 |
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| 作者单位： | 黑龙江工程学院电气与信息工程学院;哈尔滨师范大学物理与电子工程学院 |
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| 基金项目： | 黑龙江省教育厅科学研究项目(11531239) |
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| 摘 要： | 利用非平衡格林函数方法,通过一个平行耦合三量子点系统的电导被研究。电导作为电子能级的函数被数值计算。通过调整点间隧穿耦合强度,共振峰可以转变为Fano反共振峰。此外,在电导能谱中观察到2个Fano反共振峰和一个Breit-Wigner共振峰。
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| 关 键 词： | 量子点 非平衡格林函数 Fano反共振 电导 |
The influence of the inter-dot coupling strength on the conductance for a parallel-coupled triple quantum dot system |
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| HE Ze-long,ZHANG Di,BAI Yun-feng. The influence of the inter-dot coupling strength on the conductance for a parallel-coupled triple quantum dot system[J]. Journal of Heilongjiang Institute of Technology, 2012, 0(4): 52-54 |
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| Authors: | HE Ze-long ZHANG Di BAI Yun-feng |
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| Affiliation: | 1(1.School of Electrical and Information Engineering,Heilongjiang Institute of Technology,Harbin 150050,China;2.School of Physics and Electronic Engineering,Harbin Normal University,Harbin 150025,China) |
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| Abstract: | Using the non-equilibrium Green＇s function technique,the conductance through a parallel-coupled triple quantum dot system is investigated.The conductance as a function of electron energy is numerically calculated.By adjusting the inter-dot tunneling coupling strength,the resonance peaks may change into the Fano antiresonance peaks.Moreover,one can observe two Fano antiresonance peaks and one Breit-Wigner resonance peak in the conductance spectrum. |
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| Keywords: | quantum dot non-equilibrium Green＇s function Fano antiresonance conductance |
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