  Whether diffuse mismatch model for electrons (DMMe) hold true in more general
cases remains largely unexplored, especially in cases where at least one
material does not behave like a free-electron metal and/or the interface is
smooth enough to allow non-diffuse transmission of electrons. In this study,
DMMe was proposed to predict the thermal conductance of metal-metal interfaces.
A set of aluminum-X samples (X = Cu, Ag, Fe, Ni) were grown and the time domain
thermoreflectance (TDTR) technique was used to measure the metal-metal
interface conductance. It was then compared to the two variants of the
DMMe-using both a crude theory based on free-electron metals and accurate band
structures provided by density functional theory.
