Influence of central valley effective mass and alloy scattering on transient drift velocity in Ga1-xInxP1-yAsy

The instantaneous ensemble-averaged and time-averaged velocity of electrons are presented for Ga_0.27In_0.73P_0.4As_0.6, and the results are compared to those for GaAs. The results indicate that both the effective mass in the Γ conduction band and alloy scattering are very critical in determining the transient (or velocity-overshoot) characteristic as well as the static velocity-field characteristic for this quaternary material.