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

Anna Ansaba Johnson; C. M. Marcus; Mats Hanson; A.  Gossard

doi:10.1103/PhysRevLett.93.106803

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

Anna Ansaba Johnson, C. M. Marcus, Mats Hanson, A. Gossard

206 Citations (Scopus)

428 Downloads (Pure)

Abstract

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.

Original language	English
Journal	Physical Review Letters
Volume	93
Issue number	10
ISSN	0031-9007
DOIs	https://doi.org/10.1103/PhysRevLett.93.106803
Publication status	Published - 22 Dec 2003

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10.1103/PhysRevLett.93.106803

Johnson sep 2004 PRLSubmitted manuscript, 193 KB

Cite this

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