Deformation of Quantum Dots in the Coulomb Blockade Regime

TL;DR

This paper extends Coulomb blockade theory to deformed quantum dots, showing shape deformations cause correlated conductance resonances, which helps interpret experimental data on semiconductor quantum dots.

Contribution

It introduces a theoretical framework linking quantum dot deformation to conductance resonance correlations, enhancing understanding of experimental observations.

Findings

Shape deformations generate correlated conductance peaks.

Resonances can carry the same internal wavefunction.

Results are relevant for interpreting recent experiments.

Abstract

We extend the theory of Coulomb blockade oscillations to quantum dots which are deformed by the confining potential. We show that shape deformations can generate sequences of conductance resonances which carry the same internal wavefunction. This fact may cause strong correlations of neighboring conductance peaks. We demonstrate the relevance of our results for the interpretation of recent experiments on semiconductor quantum dots.