  We have developed a new and user-friendly interface energy calculation method
that avoids problems deriving from numerical differences between bulk and slab
calculations, such as the number of k points along the direction perpendicular
to the interface. We have applied this to 36 bcc-fcc metal interfaces in the
(100) orientation and found a clear dependence of the interface energy on the
difference between the work functions of the two metals, on the one hand, and
the total number of d electrons on the other. Greater mechanical deformations
were observed in fcc crystals than in their bcc counterparts. For each bcc
metal, the interface energy was found to follow the position of its d band,
whereas the same was not observed for fcc.
