Phase diagram of a binary symmetric hard-core Yukawa mixture.
We assess the accuracy of the self-consistent Ornstein-Zernike approximation for a binary symmetric hard-core Yukawa mixture by comparison with Monte Carlo simulations of the phase diagrams obtained for different choices of the ratio alpha of the unlike-to-like interactions. In particular, from the results obtained at alpha=0.75 we find evidence for a critical endpoint in contrast to recent studies based on integral equation and hierarchical reference theories. The variation of the phase diagrams with range of the Yukawa potential is investigated.
Schöll-Paschinger
Elisabeth
E
Institut für Experimentalphysik, Universität Wien, Strudlhofgasse 4, A-1090 Wien, Austria.
Levesque
Dominique
D
Weis
Jean-Jacques
JJ
Kahl
Gerhard
G