Full configuration interaction calculations of electron-hole correlation effects in strain-induced quantum dots

A full configuration interaction (FCI) approach for solving the Schrodinger equation for electrons and holes in a strain-induced quantum dot, within t he effective-mass approximation, has been developed. The FCI calculations h ave been performed on a weakly confined quantum dot system containing up to four electron-hole pairs. The results show the importance of correlation e ffects in reproducing the different features of the experimental quantum do t spectra. It is also shown that the all singles and doubles configuration interaction model, which can be used to study larger systems, is a relative ly good approximation to FCI by considering more than 90% of the correlatio n energy.