Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1546197 | Physica E: Low-dimensional Systems and Nanostructures | 2010 | 4 Pages |
Abstract
The binding energy of a negatively charged hydrogenic impurity with on- and off-center positions in a spherical Gaussian quantum dot was calculated with the configuration interaction method. Our calculations show that EbEb is always positive for on-center impurities with a maximum near to the radius for one-electron stability of the potential well RcRc. For off-center positions the binding energy can assume negative values within a range of the quantum dot radius, thus indicating the instability of the system.
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Materials Science
Electronic, Optical and Magnetic Materials
Authors
Sergio S. Gomez, Rodolfo H. Romero,