skip to main content

SciTech ConnectSciTech Connect

Title: Effects of electric field and shape on the ground state energy of an exciton bound to an ionized donor impurity in ellipsoidal quantum dots

The effects of electric field and shape on the ground state energy of an exciton bound to an ionized donor are studied in a weakly prolate (oblate) GaAs ellipsoidal quantum dot within the effective-mass approximation using a variational method in the framework of perturbation theory. Both the heavy-hole and light-hole excitons are considered. The results show that the energy shift not only depends on the electric field but also on the dot shape and size. The influence of the dot shape on the light hole case is more pronounced than that of the heavy hole case, but the influence of the electric field on the heavy hole case is more pronounced.
Authors:
;  [1]
  1. College of Science, Inner Mongolia Agricultural University, Hohhot 010018 (China)
Publication Date:
OSTI Identifier:
22258782
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 114; Journal Issue: 19; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; EFFECTIVE MASS; ELECTRIC FIELDS; EXCITONS; GALLIUM ARSENIDES; GROUND STATES; HOLES; IMPURITIES; PERTURBATION THEORY; QUANTUM DOTS; VARIATIONAL METHODS