Impact of Coulomb interaction and Kondo effect on shot noise in quantum dots

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Abstract

We examine the impact of Coulomb electron-electron interaction on transport in a junction with a quantum dot described by Kondo Hamiltonian. We analyze the Fermi liquid regime and consider the limit of zero temperature. With the help of Keldysh technique we calculate the non-linear current and shot noise as a function of applied voltage. We show that Coulomb interaction markable influences the universal effective charge of current-carrying particles e* = 5/3e which can be measured in shot-noise experiments. The electron-electron interaction modifies this universal value by a factor (e* = 5/3eF) which is less then one and also voltage dependent.

Original languageEnglish
Title of host publicationNoise and Fluctuations - 19th International Conference on Noise and Fluctuations, ICNF 2007
Pages459-462
Number of pages4
DOIs
StatePublished - 1 Dec 2007
Event19th International Conference on Noise and Fluctuations, ICNF2007 - Tokyo, Japan
Duration: 9 Sep 200714 Sep 2007

Publication series

NameAIP Conference Proceedings
Volume922
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference19th International Conference on Noise and Fluctuations, ICNF2007
Country/TerritoryJapan
CityTokyo
Period9/09/0714/09/07

Keywords

  • Kondo effect
  • Shot noise
  • unitary limit

ASJC Scopus subject areas

  • General Physics and Astronomy

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