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RESEARCH PRODUCT
Density Functional Theory of Multicomponent Quantum Dots
M. ManninenM KoskinenStephanie ReimannK. Karkkainensubject
PhysicsStrongly Correlated Electrons (cond-mat.str-el)Condensed matter physicsCondensed Matter - Mesoscale and Nanoscale PhysicsFOS: Physical sciencesFermionElectronic structureElectronCondensed Matter PhysicsThermal conductionElectronic Optical and Magnetic MaterialsCondensed Matter - Strongly Correlated ElectronsEffective mass (solid-state physics)Quantum dotMesoscale and Nanoscale Physics (cond-mat.mes-hall)Density functional theoryLocal-density approximationdescription
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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2004-05-06 |