ملخص: The effect of alloying on the electron-positron momentum densities, [varrho](p), in GaxIn1-xAs is reported. Our computations of [varrho](p) are based on the independent particle approximation (IPM) coupled with the empirical pseudopotential method (EPM). To make allowance for the chemical disorder, the virtual crystal approximation is used, including a correction to the alloy potential.An illustrative result of the electron-positron momentum densities show a deviation from linearity at low momentum which indicates the alloying effect (bowing effect).

لغة: إنجليزية