Coulomb-Modified Fano Resonance in a One-Lead Quantum Dot

Details Coulomb-Modified Fano Resonance in a One-Lead Quantum Dot Coulomb-Modified Fano Resonance in a One-Lead Quantum Dot

2003-12-22

arxiv.org/abs/cond-mat/0312571v2

Phys. Rev. Lett. 93, 106803 (2004).

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

related papers available at http://marcuslab.harvard.edu

Scientific paper

10.1103/PhysRevLett.93.106803

We investigate a tunable Fano interferometer consisting of a quantum dot coupled via tunneling to a one-dimensional channel. In addition to Fano resonance, the channel shows strong Coulomb response to the dot, with a single electron modulating channel conductance by factors of up to 100. Where these effects coexist, lineshapes with up to four extrema are found. A model of Coulomb-modified Fano resonance is developed and gives excellent agreement with experiment.

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