Mesoscopic Fano effect in a quantum dot embedded in an Aharonov-Bohm ring
Mesoscopic Fano effect in a quantum dot embedded in an Aharonov-Bohm ring
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DOI：
10.1103/physrevb.68.235304
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发表时间：
2003-12-01
影响因子：
3.7
通讯作者：
Iye, Y
中科院分区：
文献类型：
--
作者：
Kobayashi, K;Aikawa, H;Iye, Y
Fano效应通过共振和干涉之间的量子力学合作发生，可以在通过量子点和Aharonov-Bohm环的混合系统的电子输运中观察到。当库仑峰的高度与对应的Fano线形的真实的非对称参数q之间出现明显的相关性时，我们需要引入复数q来描述磁场和静电场对线形的影响。本分析表明，具有复杂的非对称参数的Fano效应提供了一个很好的探针来检测穿越电子的量子力学相位。
The Fano effect, which occurs through the quantum-mechanical cooperation between resonance and interference, can be observed in electron transport through a hybrid system of a quantum dot and an Aharonov-Bohm ring. While a clear correlation appears between the height of the Coulomb peak and the real asymmetric parameter q for the corresponding Fano line shape, we need to introduce a complex q to describe the variation of the line shape by the magnetic and electrostatic fields. The present analysis demonstrates that the Fano effect with complex asymmetric parameters provides a good probe to detect a quantum-mechanical phase of traversing electrons.