Coulomb Blockade in a Nonthermalized Quantum Dot

George McArdle, R. Davies, Igor Lerner*, I. V. Yurkevich

*Corresponding author for this work

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Abstract

We investigate nonequilibrium transport properties of a quantum dot in the Coulomb blockade regime under the condition of negligible inelastic scattering during the dwelling time of the electrons in the dot. Using the quantum kinetic equation we show that the absence of thermalization leads to a double step in the distribution function of electrons on the dot, provided that it is symmetrically coupled to the leads. This drastically changes nonlinear transport through the dot resulting in an additional (compared to the thermalized case) jump in the conductance at voltages close to the charging energy, which could serve as an experimental manifestation of the absence of thermalization.

Original languageEnglish
Article number206303
Number of pages5
JournalPhysical Review Letters
Volume131
Issue number20
DOIs
Publication statusPublished - 17 Nov 2023

Bibliographical note

Funding Information:
We gratefully acknowledge support from EPSRC under Grant No. EP/R029075/1 (I. V. L.) and from the Leverhulme Trust under Grant No. RPG-2019-317 (I. V. Y.).

Publisher Copyright:
© 2023 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/"Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.

ASJC Scopus subject areas

  • General Physics and Astronomy

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