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Fano resonance in electronic transport through a quantum wire with a side-coupled quantum dot: X-boson treatment

R. Franco·M. S. Figueira·E. V. Anda
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Abstract

The transport through a quantum wire with a side coupled quantum dot is studied. We use the X-boson treatment for the Anderson single impurity model in the limit of $U=\infty $. The conductance presents a minimum for values of T=0 in the crossover from mixed-valence to Kondo regime due to a destructive interference between the ballistic channel associated with the quantum wire and the quantum dot channel. We obtain the experimentally studied Fano behavior of the resonance. The conductance as a function of temperature exhibits a logarithmic and universal behavior, that agrees with recent experimental results.

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R. Franco, M. S. Figueira, E. V. Anda. 2002-09-16. Fano resonance in electronic transport through a quantum wire with a side-coupled quantum dot: X-boson treatment. https://doi.org/10.1103/physrevb.67.155301

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