High pressure electronic properties and elastic stability criteria of AlAs

We study the electronic properties and elastic stability criteria of AlAs under hydrostatic pressure by the pseudopotential method combined with the Harrison bond-orbital model for determining the elastic constants. The numerically calculated masses and elastic constants are in good agreement with the available experimental data. Computed electronic properties depend non-linearly on the lattice constant. The generalized stability criteria show the material of interest to be mechanically stable at pressures up to 120 kbar.