Low energy excitations of double quantum dots in the lowest Landau level regime

TL;DR

This paper investigates the energy spectrum and magnetic behavior of double quantum dots in the lowest Landau level, using exact diagonalization to analyze electron interactions and compare with other quantum systems.

Contribution

It provides a detailed analysis of double quantum dots' spectral and magnetic properties in the lowest Landau level, including comparisons with related quantum systems and discussion of the Kohn theorem.

Findings

Energy spectra depend on hopping and Zeeman parameters.

Magnetic properties show distinct features compared to single dots.

Results align with theoretical predictions for quantum dot systems.

Abstract

We study the spectrum and magnetic properties of double quantum dots in the lowest Landau level for different values of the hopping and Zeeman parameters by means of exact diagonalization techniques in systems of N=6 and N=7 electrons and filling factor close to 2. We compare our results with those obtained in double quantum layers and single quantum dots. The Kohn theorem is also discussed.