Schottky barrier height of Au on n-type Ga1¿xAlxSb (0.0¿x¿0.65)

The dependence of the barrier height ¿Bn of Au-Ga1¿xAlxSb Schottky barriers on x, the mole fraction of Al in the solid, has been measured. The data show that as x increases the values of ¿Bn also increase. However, the measured barrier heights do not agree with those predicted by the `common anion¿ rule. This result, coupled with other available data, indicates that the Au-Ga1¿xAlxSb hole Schottky barrier height (¿Bn) is not independent of the Ga/Al cation ratio.