Current Density Functional approach to large quantum dots in intense magnetic fields

TL;DR

This paper uses Current Density Functional Theory to analyze a large quantum dot with 210 electrons in a magnetic field, revealing features related to compressible and incompressible states and comparing results with experiments.

Contribution

It presents a detailed study of large quantum dots under magnetic fields using CDFT, highlighting formation of quantum states and providing comparisons with experimental data.

Findings

Identification of compressible and incompressible states

Calculation of orbital and spin angular momenta as functions of B

Agreement with experimental and theoretical results

Abstract

Within Current Density Functional Theory, we have studied a quantum dot made of 210 electrons confined in a disk geometry. The ground state of this large dot exhibits some features as a function of the magnetic field (B) that can be attributed in a clear way to the formation of compressible and incompressible states of the system. The orbital and spin angular momenta, the total energy, ionization and electron chemical potentials of the ground state, as well as the frequencies of far-infrared edge modes are calculated as a function of B, and compared with available experimental and theoretical results.