Is the quantum dot at large bias a weak-coupling problem?

P Coleman, Christopher Hooley, O Parcollet

Research output: Contribution to journalArticlepeer-review

54 Citations (Scopus)

Abstract

We examine the two-lead Kondo model for a de-biased quantum dot in the Coulomb blockade regime. From perturbative calculations of the magnetic susceptibility, we show that the problem retains its strong-coupling nature, even at bias voltages larger than the equilibrium Kondo temperature. We give a speculative discussion of the nature of the renormalization group flows and the strong-coupling state that emerges at large voltage bias.

Original languageEnglish
Pages (from-to)4088
Number of pages4091
JournalPhysical Review Letters
Volume86
DOIs
Publication statusPublished - 30 Apr 2001

Keywords

  • TIME RENORMALIZATION-GROUP
  • ARTIFICIAL ATOMS
  • ANDERSON MODEL
  • KONDO
  • TRANSPORT
  • EQUILIBRIUM
  • LIMIT
  • IMPURITY
  • CURRENTS

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