  A thermodynamically consistent density functional-perturbation theory is used
to study the isostructural solid-to-solid transition which takes place in the
hard sphere/attractive Yukawa system when the Yukawa tail is sufficiently
short-ranged. A comparison with results for the square well potential allows us
to study the effect of the attractive potential form on the solid-solid
transition. Reasonable agreement with simulations is found for the main
transition properties as well as for the phase diagram evolution with the the
range of the attractive potential.
