Coulomb Blockade in a Nonthermalized Quantum Dot

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.

Publication DOI: https://doi.org/10.1103/PhysRevLett.131.206303
Divisions: College of Engineering & Physical Sciences > School of Computer Science and Digital Technologies > Applied Mathematics & Data Science
College of Engineering & Physical Sciences > School of Computer Science and Digital Technologies
College of Engineering & Physical Sciences
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.).
Additional Information: Published by the American Physical Society under the terms of the 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.
Publication ISSN: 1079-7114
Last Modified: 11 Apr 2024 07:27
Date Deposited: 14 Dec 2023 10:58
Full Text Link:
Related URLs: https://journal ... Lett.131.206303 (Publisher URL)
http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Article
Published Date: 2023-11-17
Accepted Date: 2023-10-12
Submitted Date: 2023-06-06
Authors: McArdle, G
Davies, R
Lerner, I V
Yurkevich, I V (ORCID Profile 0000-0003-1447-8913)

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