Far-infrared spectra of lateral quantum dot molecules

Thumbnail Image

Files

Helle_2006_New_J._Phys._8_027.pdf (6.2 MB)

Access rights

openAccess
publishedVersion

URL

Journal Title

Journal ISSN

Volume Title

A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
This publication is imported from Aalto University research portal.
View publication in the Research portal (opens in new window)
View/Open full text file from the Research portal (opens in new window)
Other link related to publication (opens in new window)
Unless otherwise stated, all rights belong to the author. You may download, display and print this publication for Your own personal use. Commercial use is prohibited.

Authors

Date

2006

Department

Department of Applied Physics

Major/Subject

Mcode

Degree programme

Language

en

Pages

Series

New Journal of Physics, Volume 8, issue February 2006, pp. 1-18

Abstract

We study effects of electron–electron interactions and confinement potential on the magneto-optical absorption spectrum in the far-infrared (FIR) range of lateral quantum dot molecules (QDMs). We calculate FIR spectra for three different QDM confinement potentials. We use an accurate exact diagonalization technique for two interacting electrons and calculate dipole transitions between two-body levels with perturbation theory. We conclude that the two-electron FIR spectra directly reflect the symmetry of the confinement potential and interactions cause only small shifts in the spectra. These predictions could be tested in experiments with non-parabolic quantum dots (QDs) by changing the number of confined electrons. We also calculate FIR spectra for up to six non-interacting electrons and observe some additional features in the spectrum.

Description

Keywords

far-infrared spectrum, quantum dots

Other note

DOI

10.1088/1367-2630/8/2/027

Citation

Helle, M, Harju, A & Nieminen, R M 2006, 'Far-infrared spectra of lateral quantum dot molecules', New Journal of Physics, vol. 8, no. February 2006, 27, pp. 1-18. https://doi.org/10.1088/1367-2630/8/2/027

Permanent link to this item

https://urn.fi/URN:NBN:fi:aalto-202510087565

Collections

[article-cris] Perustieteiden korkeakoulu / SCI