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arXiv 1004.0472cond-mat.mes-hall
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开放量子点的Fano输运机制

Fano Regime of Transport through Open Quantum Dots

E. R. Racec, U. Wulf, P. N. Racec

摘要:

我们分析了一个量子点强耦合到导电引线通过量子点接触-法诺制度的运输-和报告的各种共振状态,这表明在散射过程中的主导地位的相互作用的共振在低限制电位。存在类似孤立点本征态的共振态,其宽度随与环境耦合强度的增加而增加,以及混合共振态。最后一个共振态近似地表示为在横向上具有相同宇称的本征态的线性组合,相应的共振态表现为共振俘获或能级排斥现象。混合模式的存在表明,开放的量子点的行为在法诺制度像一个人工分子。

英文摘要:

We analyze a quantum dot strongly coupled to the conducting leads via quantum point contacts - Fano regime of transport - and report a variety of resonant states which demonstrate the dominance of the interacting resonances in the scattering process in a low confining potential. There are resonant states similar to the eigenstates of the isolated dot, whose widths increase with increasing the coupling strength to the environment, and hybrid resonant states. The last ones are approximatively obtained as a linear combination of eigenstates with the same parity in the lateral direction, and the corresponding resonances show the phenomena of resonance trapping or level repulsion. The existence of the hybrid modes suggests that the open quantum dot behaves in the Fano regime like an artificial molecule.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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