Quantum transport in a single layered structure for impurity scattering

In this letter we present results for the mobility of electrons confined in a layered structure when the scattering of the confined carriers is dominated by ionized impurity scattering. In the size quantum limit, the mobility is found to decrease with the layer thickness in contrast to the situation where acoustic phonon scattering is dominant. In the latter case, the mobility is found to increase with the layer thickness. We have considered the effects of both background and remote impurities on the mobility of the confined carriers. The results which we have obtained are considerably different from those currently available in the literature.