  We developed and tested an approach for predicting trends for efficient hot
carrier generation among disordered metal alloys. We provide a simple argument
for the importance of indirect transitions in the presence of disorder, thus
justifying the use of Joint Density of States (JDOS)-like quantities for
exploring these trends. We introduce a new JDOS-like quantity, JDOSK, which
heuristically accounts for longer lifetimes of quasiparticles close to the
Fermi energy. To demonstrate the efficacy of this new quantity, we apply it to
the study of Cu50X50 where X = Ag, Au, Pd and Y50Pd50 where Y = Au, Ni. We
predict that Ni50Pd50 produces the most hot carriers among the alloys
considered. The improvement in the density of excited photocarriers over the
base alloy used, Cu50Ag50, is 3.4 times for 800 nm and 19 times for 1550 nm
light. This boost in hot-carrier generation is consequence of the ferromagnetic
nature of the Ni alloy. We argue that our method allows efficient
material-specific predictions for low bias photoconductivity of alloys.
