Effective masses in Sn-doped Ga1−xAlxAs (x<0.33) determined by the Shubnikov–de Haas effect

Abstract
The first direct effective mass measurements of electrons in metalorganic vapor phase epitaxy (MOVPE) Sn-doped Ga1−xAlxAs (x<0.33) epilayers from Shubnikov–de Haas (SdH) oscillations are reported. The m*eΓ values of the conduction band were obtained up to x=0.3. These data, corrected for nonparabolicity, were compared to values calculated by the k ⋅ p model, taking into account the disorder bowing.