INVESTIGADORES
ROMERO rodolfo Horacio
artículos
Título:
Binding energy of an off-center shallow donor D- in a spherical quantum dot
Autor/es:
S. S. GOMEZ; R. H. ROMERO
Revista:
PHYSICA E
Editorial:
ELSEVIER SCIENCE BV
Referencias:
Año: 2010 vol. 42 p. 1563 - 1566
ISSN:
1386-9477
Resumen:
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 Eb is always positive for on-center impurities with a maximum near to the radius for one-electron stability of the potential well Rc . 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.
