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, cilt.30, ss.143-149, 2005 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 30
  • Basım Tarihi: 2005
  • Doi Numarası: 10.1016/j.physe.2005.08.007
  • Dergi Adı: PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.143-149
  • Anahtar Kelimeler: 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 Üniversitesi Adresli: Hayır

Özet

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.