SOLID-TO-SOLID ISOSTRUCTURAL TRANSITION IN THE HARD-SPHERE ATTRACTIVE YUKAWA SYSTEM

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 range of the attractive potential. (C) 1995 American Institute of Physics.