Coulomb-modified Fano interference in a double quantum dot Aharonov-Bohm ring
文献类型：期刊论文
| 作者 | W. J. Gong ; Y. Han ; X. F. Xie ; G. Z. Wei |
| 刊名 | Physica Status Solidi B-Basic Solid State Physics
 |
| 出版日期 | 2010 |
| 卷号 | 247期号:9页码:2222-2230 |
| 关键词 | collective excitations electronic transport quantum dots electronic transport kondo resonance |
| ISSN号 | 0370-1972 |
| 中文摘要 | By truncating the equation of motion of Green function within the second-order approximation, the Coulomb-induced changes of Fano interference in electronic transport through a double quantum dot (QD) Aharonov-Bohm (AB) ring are investigated. It shows that the Coulomb interaction in the reference-channel QD can remarkably modify the Fano interference. When studying the conductance vs the resonant-channel QD, we find that the presented Coulomb interaction in the reference-channel QD leads to the increase or decrease of the asymmetry of the Fano lineshape, as well as the inversion of the Fano lineshape, dependent on the appropriate Coulomb strength. In the case of the adjustable levels of both the QDs, the Coulomb-induced splitting of the nonresonant channel induces the destruction of the Fano interference; whereas two weak Fano lineshapes may appear in the conductance spectra when the many-body effect in the QD of the resonant channel is also considered. Interestingly, in the absence of magnetic field, when the different-strength electron interactions make the different-channel QD levels the same as each other, which state is resonant will keep empty regardless the adjustment of QD levels. (C) 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/31120]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | W. J. Gong,Y. Han,X. F. Xie,et al. Coulomb-modified Fano interference in a double quantum dot Aharonov-Bohm ring[J]. Physica Status Solidi B-Basic Solid State Physics,2010,247(9):2222-2230. |
| APA | W. J. Gong,Y. Han,X. F. Xie,&G. Z. Wei.(2010).Coulomb-modified Fano interference in a double quantum dot Aharonov-Bohm ring.Physica Status Solidi B-Basic Solid State Physics,247(9),2222-2230. |
| MLA | W. J. Gong,et al."Coulomb-modified Fano interference in a double quantum dot Aharonov-Bohm ring".Physica Status Solidi B-Basic Solid State Physics 247.9(2010):2222-2230. |
入库方式： OAI收割
来源：金属研究所
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