title: Unusual phase behavior of one-component systems with two-scale isotropic interactions.
abstract: We study the phase behavior of systems of particles interacting through pair potentials with a hard core plus a soft repulsive component. We consider several different forms of soft repulsion, including a square shoulder, a linear ramp and a quasi-exponential tail. The common feature of these potentials is the presence of two repulsive length scales, which may be the origin of unusual phase behaviors such as polyamorphism both in the equilibrium liquid phase and in the glassy state, water-like anomalies in the liquid state and anomalous melting at very high pressures.
authors.affiliation: Department of Physics, Yeshiva University, 500 West 185th Street, New York, NY 10033, USA.
authors.forename: S V
authors.initials: SV
authors.lastname: Buldyrev
authors.forename: G
authors.initials: G
authors.lastname: Malescio
authors.forename: C A
authors.initials: CA
authors.lastname: Angell
authors.forename: N
authors.initials: N
authors.lastname: Giovambattista
authors.forename: S
authors.initials: S
authors.lastname: Prestipino
authors.forename: F
authors.initials: F
authors.lastname: Saija
authors.forename: H E
authors.initials: HE
authors.lastname: Stanley
authors.forename: L
authors.initials: L
authors.lastname: Xu