title: Penalty method to predict crystal structures involving hard-core interactions.
abstract: A penalty method is developed for predicting crystal structures in the presence of hard-core interactions. Applications to binary mixtures of neutral as well as charged disks are in particular investigated. For the case of neutral hard disks, a new stable A₃B₃ phase is reported. Concerning the charged case (i.e., two-dimensional ionic crystals), the full phase diagram as a function of the size ratio of the constitutive ions is calculated.
authors.affiliation: Institut für Theoretische Physik II: Weiche Materie, Heinrich-Heine-Universität Düsseldorf,Universitätsstraße 1, D-40225 Düsseldorf, Germany.
authors.forename: L
authors.initials: L
authors.lastname: Assoud
authors.forename: R
authors.initials: R
authors.lastname: Messina