Influence of quantum dot shape on the Landé<i>g</i>-factor determination

Abstract

We calculate the g-factor for electron, holes, and electron-hole pairs in CdTe quantum dots using the multiband $\mathbf{k}\mathit{\ensuremath{\cdot}}\mathbf{p}$ theory. The results show that g-factors are highly sensitive to the spatial confinement and its magnitude as well as sign may change when the geometric shape of the dot is altered. We identify the valence-conduction interband coupling between states with different parities, as mainly responsible for level reordering defining these features. We are providing insights to control the Land\'e g-factor in quantum dots.