Abstract
We consider how the absence of thermalization affects the classical Coulomb blockade regime in quantum dots. By solving the quantum kinetic equation in the experimentally accessible regime when the dot has two relevant occupation states, we calculate the current–voltage characteristics for arbitrary coupling to the leads. If the couplings are strongly asymmetric, the Coulomb staircase is practically reduced to the first step, which is independent of the charging energy, when the Fermi energy is comparatively small, while the standard thermalized results are recovered in the opposite case. When the couplings are of the same order, the absence of thermalization has a new, striking signature—a robust additional peak in the differential conductance.
Original language | English |
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Pages (from-to) | 1083-1089 |
Number of pages | 7 |
Journal | Low Temperature Physics |
Volume | 50 |
Issue number | 12 |
Early online date | 1 Dec 2024 |
DOIs | |
Publication status | Published - Dec 2024 |
Bibliographical note
This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in G. McArdle, R. Davies, I. V. Lerner, I. V. Yurkevich; New regime of the Coulomb blockade in quantum dots. Low Temp. Phys. 1 December 2024; 50 (12): 1083–1089. https://doi.org/10.1063/10.0034340Keywords
- Coulomb blockade
- current-voltage characteristics.
- quantum dots
- thermalization