Fano resonance in a two-level quantum dot side-coupled to leads

Details Fano resonance in a two-level quantum dot side-coupled to leads Fano resonance in a two-level quantum dot side-coupled to leads

2007-10-16

arxiv.org/abs/0710.3045v1

Physical Review B 77, 033305 (2008)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 4 figures

Scientific paper

10.1103/PhysRevB.77.033305

We theoretically study Fano resonance in a two-level quantum dot side-coupled to two leads, which are connected by a direct channel. The resonance lineshape is found to be deformed, from the conventional Fano form, by interlevel Coulomb interaction and interlevel interference. We derive the connection between the lineshape deformation and the interaction-induced nonmonotonicity of level occupation, which may be useful for experimental study. The dependence of the lineshape on the transmission of the direct channel and on the dot-lead coupling matrix elements is discussed.

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