Alloy scattering in p-type AlxGa1−xAs

Abstract
The hole mobility of Be‐doped ( ∼ 2 × 1017 cm−3) AlxGa1−xAs, for x=0–1, is analyzed both theoretically and experimentally. Alloy scattering is very important, and in fact reduces the hole mobility from 150 to less than 90 cm2/V s at x=0.5. The main parameter in the alloy scattering formulation, the alloy potential Eal, is found to be about 0.5 eV for p‐type AlxGa1−xAs.