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

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.

6 pages, 10 eps figs., revtex4

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• Universality and the zero-bias conductance of the single-electron transistor
• Kondo and Dicke effect in quantum-dots side coupled to a quantum wire
• Andreev reflection through Fano resonances in molecular wires
• Universal zero-bias conductance through a quantum wire side-coupled to a quantum dot
• Thermal dependence of the zero-bias conductance through a nanostructure
• Quantum dots as scatterers in electronic transport : interference and correlations
• Kondo effect in side coupled double quantum-dot molecule
• Coherent switching by detuning a side-coupled quantum-dot system
• Fano resonances can provide two criteria to distinguish Majorana bound states from other candidates in experiments
• STM tunneling through a quantum wire with a side-attached impurity