Effect of impurity on the determination of ground-state properties of parabolic quantum dot composed of N electrons

TL;DR

This paper investigates how an impurity affects the ground-state properties of a parabolic quantum dot with N electrons using the Thomas-Fermi approximation, highlighting significant changes especially for small electron numbers and strong confinement.

Contribution

It introduces a study of impurity effects on quantum dot properties within the Thomas-Fermi framework, emphasizing the impact on small systems and strong confinement regimes.

Findings

Impurity significantly alters electron density, chemical potential, and total energy.

Effects are more pronounced for fewer electrons.

Strong confinement amplifies impurity influence.

Abstract

The two dimensional Thomas-Fermi approximation is applied to the problem of parabolic quantum dot composed of N electrons and an on-center impurity. Change induced by impurity on electron density, chemical potential and total energy is discussed and it is found that existence of impurity makes significant changes on the determination of above properties especially for the small number of electrons and strong confinements.