New regime of the Coulomb blockade in quantum dots

被引：0

作者：

McArdle, G. ^{[1
]}

Davies, R. ^{[1
,2
]}

Lerner, I.V. ^{[1
]}

Yurkevich, I.V. ^{[2
]}

机构：

[1] School of Physics and Astronomy, University of Birmingham, Birmingham,B15 2TT, United Kingdom

[2] School of Computer Science and Digital Technologies, Aston University, Birmingham,B4 7ET, United Kingdom

来源：

Fizika Nizkikh Temperatur | 2024年 / 50卷 / 12期

基金：

英国工程与自然科学研究理事会;

关键词：

Coulomb interactions - Electron energy levels - Thermal Engineering;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

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 charge 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. © 2024 B.Verkin Institute for Low Temperature Physics and Engineering of the NAS of Ukraine. All rights reserved.

引用

页码：1207 / 1214