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Mesoscopic Fano Effect in a Quantum Dot Embedded in an Aharonov-Bohm Ring

Kensuke Kobayashi·Hisashi Aikawa·Shingo Katsumoto·Yasuhiro Iye
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Abstract

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 lineshape, we need to introduce a complex $q$ to describe the variation of the lineshape 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.

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Kensuke Kobayashi, Hisashi Aikawa, Shingo Katsumoto, Yasuhiro Iye. 2004-05-06. Mesoscopic Fano Effect in a Quantum Dot Embedded in an Aharonov-Bohm Ring. https://doi.org/10.1103/physrevb.68.235304

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