Freezing of a soft-core fluid in a one-dimensional potential: Predictions based on a pressure-balance equation.

@article{Kraft2020FreezingOA,
  title={Freezing of a soft-core fluid in a one-dimensional potential: Predictions based on a pressure-balance equation.},
  author={Alexander Kraft and Sabine H. L. Klapp},
  journal={Physical review. E},
  year={2020},
  volume={101 1-1},
  pages={
          012609
        }
}
Using concepts from classical density functional theory, we investigate the freezing of a two-dimensional system of ultrasoft particles in a one-dimensional external potential, a phenomenon often called laser-induced freezing (LIF). In the first part of the paper, we present numerical results from free minimization of a mean-field density functional for a system of particles interacting via the GEM-4 potential. We show that the system does indeed display a LIF transition, although the… 
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References

SHOWING 1-10 OF 68 REFERENCES
Phase transitions of soft disks in external periodic potentials: a Monte Carlo study.
TLDR
The simulations show that the system of soft disks behaves in a fashion similar to charge stabilized colloids, which are known to undergo an initial freezing, followed by a remelting transition as the amplitude of the imposed, modulating field produced by crossed laser beams is steadily increased.
Fluid and solid phases of the Gaussian core model
We study the structural and thermodynamic properties of a model of point particles interacting by means of a Gaussian pair potential first introduced by Stillinger (Stillinger F H 1976 J. Chem. Phys.
Mean-field fluid behavior of the gaussian core model
  • Louis, Bolhuis, Hansen
  • Physics
    Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics
  • 2000
TLDR
It is shown that the Gaussian core model of particles interacting via a penetrable repulsive Gaussian potential behaves as a weakly correlated "mean-field fluid" over a surprisingly wide density and temperature range.
Why do ultrasoft repulsive particles cluster and crystallize? Analytical results from density-functional theory.
We demonstrate the accuracy of the hypernetted chain closure and of the mean-field approximation for the calculation of the fluid-state properties of systems interacting by means of bounded and
Laser-induced reentrant freezing in two-dimensional attractive colloidal systems.
The effects of an externally applied one-dimensional periodic potential on the freezing and melting behavior of two-dimensional systems of colloidal particles with a short-range attractive
Novel structure formation of a phase separating colloidal fluid in a ratchet potential
Based on Dynamical Density Functional Theory (DDFT) we investigate a binary mixture of interacting Brownian particles driven over a substrate via a one-dimensional ratchet potential. The particles
Correlations in the liquid–vapor interface
A liquid–vapor system in a gravitational field is examined using the grand canonical distribution functions ρs(r1...rs) and direct correlation functions cs(r1...rs) for a nonuniform system. The limit
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