Interplay of Kondo and Fano Resonance in Electronic Transport in Nanostructures

B.R. Bułkaa, P. Stefańskia and A. Tagliacozzob aInstitute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17, 60-179 Poznań, Poland bCoherentia-INFM, Unita di Napoli and Dipartimento di Scienze Fisiche, Universita di Napoli Federico II, Monte S. Angelo-via Cintia, 80126 Napoli, Italy

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Received: 4 06 2005;

Quantum interference and electronic correlations are processes relevant for electronic transport in nanostructures. We present theoretical studies of transport for various models, which take into account these processes and describe the Fano resonance as well as many-body effects like the Kondo resonance. The results are compared with transport measurements performed on a small quantum dot strongly coupled to electrodes, a large semi-open quantum dot, a side-attached quantum dot to a quantum wire systems and a quantum dot embedded in the metallic ring. We show how conductance characteristics of the Kondo and the Fano resonance are modified in different situations.

DOI: 10.12693/APhysPolA.108.555 PACS numbers:73.63.-b, 72.15.Qm, 75.20.Hr