Abstract: | The spatial correlations of impurity ions in doped thin layers have been considered. A model of hard spheres on the plane
has been developed for describing the correlations. In this model, an analytical expression has been obtained for the structure
factor of 2D-electrons. The concentration dependences of the mobility of 2D-electrons in heterostructures with separate doping
have been investigated using Al
x
Ga1 − x
As/GaAs as an example. |