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Combined effect of the screening of a donor ion and the conduction band nonparabolicity on the binding energy of a donor at the center of a spherical quantum dot
Author(s) -
Elabsy A. M.,
Csavinszky P.
Publication year - 1996
Publication title -
international journal of quantum chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.484
H-Index - 105
eISSN - 1097-461X
pISSN - 0020-7608
DOI - 10.1002/(sici)1097-461x(1996)60:7<1719::aid-qua55>3.0.co;2-s
Subject(s) - quantum dot , electron , chemistry , conduction band , ion , radius , atomic physics , condensed matter physics , valence (chemistry) , valence band , effective mass (spring–mass system) , center (category theory) , physics , quantum mechanics , computer security , computer science , crystallography , organic chemistry
We carried out variational model calculations for the assessment of the combined effect of the nonparabolicity of the electron effective mass and the screening of the donor ion by the valence electrons of GaAs for a donor placed at the center of a spherical quantum dot. We considered finite confining potentials between the GaAs QD and the surrounding Ga 1‐ x Al x As matrix. We found that the combined effect becomes more pronounced as the radius of the quantum dot decreases. © 1996 John Wiley & Sons, Inc. Int J Quant Chem 60: 507–510, 1996