Non-Perturbative Aspects of Fano Resonances in Quantum Dots: An Exact Treatment

Details Non-Perturbative Aspects of Fano Resonances in Quantum Dots: An Exact Treatment Non-Perturbative Aspects of Fano Resonances in Quantum Dots: An Exact Treatment

2002-07-25

arxiv.org/abs/cond-mat/0207622v1

Physics

Condensed Matter

Strongly Correlated Electrons

5 pages, 3 figures

Scientific paper

We consider transport through quantum dots with two tunneling paths. Interference between paths gives rise to Fano resonances exhibiting Kondo-like physics. In studying such quantum dots, we employ a generalized Anderson model which we argue to be integrable. The exact solution is non-perturbative in the tunneling strengths of both paths. By exploiting this integrability, we compute the zero temperature linear response conductance of the dot and so obtain reasonable quantitative agreement with the experimental measurements reported in Gores et al. PRB 62, 2188 (2000).

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