Affiliation:
1. Groupe de Recherche sur les Couches Minces en Photonique (GCMP), Département de Physique, Université de Moncton, Canada
Abstract
In order to clarify the electronic and optical properties of wide-energy gap zinc-blende structure ZnSe , BeSe and their alloys, a simple pseudo-potential scheme (EPM), within an affective potential the virtual crystal approximation (VCA) which incorporates compositional disorder as an effective potential are presented. Angular correlation of positron annihilation radiation (ACPAR) along different crystallographic directions in Zn 1-x Be x Se are calculated. We observe that the electron-positron momentum density increases rapidly with increasing Beryllium content.
Publisher
World Scientific Pub Co Pte Lt
Subject
Condensed Matter Physics,Statistical and Nonlinear Physics