Decoupling and antiresonance in electronic transport through a quantum dot chain embodied in an Aharonov-Bohm interferometer
文献类型：期刊论文
| 作者 | Y. Han ; W. J. Gong ; H. N. Wu ; G. Z. Wei |
| 刊名 | Physica B-Condensed Matter
 |
| 出版日期 | 2009 |
| 卷号 | 404期号:14-15页码:2001-2007 |
| 关键词 | Quantum dot Decoupling Antiresonance transistor logic |
| ISSN号 | 0921-4526 |
| 中文摘要 | Electronic transport through a quantum dot chain embodied in an Aharonov-Bohm interferometer is theoretically investigated. In such a system, we find that when the quantum dot chain is symmetrically placed some of its molecular states decouple from the leads. Namely, in the absence of magnetic flux all odd molecular states decouple from the leads, but all even molecular states decouple from the leads when an appropriate magnetic flux is introduced. Interestingly, the antiresonance position in the electron transport spectrum is independent of the change of the decoupled molecular states. When incorporating the many-body effect by only considering the Hubbard term and truncating the motion equation of the Green functions to the second-order, we show that the emergence of decoupling gives rise to the apparent destruction of electron-hole symmetry. By adjusting the magnetic flux through either subring, some molecular states decouple from one lead but still couple to the other, and then some new antiresonances occur. Crown Copyright (C) 2009 Published by Elsevier B.V. All rights reserved. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/31949]  |
| 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 | Y. Han,W. J. Gong,H. N. Wu,et al. Decoupling and antiresonance in electronic transport through a quantum dot chain embodied in an Aharonov-Bohm interferometer[J]. Physica B-Condensed Matter,2009,404(14-15):2001-2007. |
| APA | Y. Han,W. J. Gong,H. N. Wu,&G. Z. Wei.(2009).Decoupling and antiresonance in electronic transport through a quantum dot chain embodied in an Aharonov-Bohm interferometer.Physica B-Condensed Matter,404(14-15),2001-2007. |
| MLA | Y. Han,et al."Decoupling and antiresonance in electronic transport through a quantum dot chain embodied in an Aharonov-Bohm interferometer".Physica B-Condensed Matter 404.14-15(2009):2001-2007. |
入库方式： OAI收割
来源：金属研究所
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