CONFINAMIENTO NANOSC´OPICO EN ESTRUCTURAS ... - It works!

200 PublicacionesJ.L. Movilla, J. Planelles / Computer Physics Communications 170 (2005) 144–152 145[2]. Particularly, polarization charges-coming from different dielectric response in different media-exert their mostimportant role in QDs [3], often turning into a key factor in the understanding of the properties of these nanostructures[2,4–7]. The relevant role of polarization has led then to both experimental [8,9] and theoretical [10–12]efforts in order to integrate the dielectric effects as control variables for new nanoscopic devices.In spite of growing interest in the topic of impurity doping in nanocrystallites, most theoretical work carriedout on shallow donors in spherical quantum dots employs variational approaches in which dielectric effects arenot included [13–16], or, alternatively, perturbation methods limited to the strong confinement regime [11,17,18](R