Density Functional Theory of Multicomponent Quantum Dots

Quantum dots with conduction electrons or holes originating from several bands are considered. We assume the particles are confined in a harmonic potential and assume the electrons (or holes) belonging to different bands to be different types of fermions with isotropic effective masses. The density...

Full description

Saved in:
Bibliographic Details
Published inarXiv.org
Main Authors Koskinen, K Karkkainen M, Reimann, S M, Manninen, M
Format Paper
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 06.05.2004
Subjects
Conduction electrons
Density functional theory
Fermions
Quantum dots
Online AccessGet full text

Cover

More Information
Summary:Quantum dots with conduction electrons or holes originating from several bands are considered. We assume the particles are confined in a harmonic potential and assume the electrons (or holes) belonging to different bands to be different types of fermions with isotropic effective masses. The density functional method with the local density approximation is used. The increased number of internal (Kohn-Sham) states leads to a generalisation of Hund's first rule at high densities. At low densitites the formation of Wigner molecules is favored by the increased internal freedom.
ISSN:2331-8422
DOI:10.48550/arxiv.0405107