We have determined the Cu local density of states in CuAu I by utilizing the Cooper minimum phenomenon in the Au 5d photoemission cross section. To assist the analysis we carried out fully relativistic x-ray photocurrent calculations using the potential functions and densities of states from electronic structure calculations of CuAu I based on the relativistic Korringa-Kohn-Rostoker method. The good agreement between the experiment and theory suggests that the latter scheme provides a realistic description of the Cu local density of states in CuAu I.

• Received 6 June 1994

DOI:https://doi.org/10.1103/PhysRevB.51.1513