A parabolic quantum dot with N electrons and an impurity

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GULVEREN B., ATAV U., Sahin M., TOMAK M.

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, vol.30, pp.143-149, 2005 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 30
  • Publication Date: 2005
  • Doi Number: 10.1016/j.physe.2005.08.007
  • Journal Name: PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.143-149
  • Keywords: Thomas-Fermi, impurity, quantum dot, THOMAS-FERMI APPROXIMATION, HYDROGENIC DONOR STATES, WELL WIRES, SEMICLASSICAL APPROACH, ENERGY-SPECTRA, HARMONIC TRAP, GROUND-STATE, MICROCRYSTALS, MODEL, ATOMS
  • Abdullah Gül University Affiliated: No

Abstract

Ground-state properties of a two-dimensional quantum dot composed of N electrons and an impurity are investigated by the Thomas-Fermi (TF) method at T = 0. The changes induced by the impurity in electron density, chemical potential and total energy are calculated. Calculations are also performed for different number of particles and strength of confinement. The results indicate that Thomas-Fermi approximation is applicable even when the system contains only a few particles. (c) 2005 Elsevier B.V. All rights reserved.