Phase behavior of a system of particles with core collapse

Details Phase behavior of a system of particles with core collapse Phase behavior of a system of particles with core collapse

1998-05-05

arxiv.org/abs/cond-mat/9805059v1

Physics

Condensed Matter

Statistical Mechanics

11 pages, 15 figures included. To appear in PRE. Some figures in low quality format. Better ones available upon request from j

Scientific paper

10.1103/PhysRevE.58.1478

The pressure-temperature phase diagram of a one-component system, with particles interacting through a spherically symmetric pair potential in two dimensions is studied. The interaction consists of a hard core plus an additional repulsion at low energies. It is shown that at zero temperature, instead of the expected isostructural transition due to core collapse occurring when increasing pressure, the system passes through a series of ground states that are not triangular lattices. In particular, and depending on parameters, structures with squares, chains, hexagons and even quasicrystalline ground states are found. At finite temperatures the solid-fluid coexistence line presents a zone with negative slope (which implies melting with decreasing in volume) and the fluid phase has a temperature of maximum density, similar to that in water.

Affiliated with

Also associated with

No associations

Rating

Phase behavior of a system of particles with core collapse does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Phase behavior of a system of particles with core collapse, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Phase behavior of a system of particles with core collapse will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-142386