Theory of SrTiO3 2DEGs

There has been much recent interest in oxide 2DEGS - in particular those involving SrTiO3. In spite of the simple conduction band structure of the parent material, there has been no quantitative understanding of the physical properties of these systems. We have built a model, informed by experiment, that is sufficiently realistic to describe defect free surface/interface states in SrTiO3. The model is able to account for non-local dielectric screening and the orbital dependence of quantum confinement effects. Preliminary results of the model will be compared with experiment.