Interplay between thermal percolation and jamming upon dimer adsorption on binary alloys

Details Interplay between thermal percolation and jamming upon dimer adsorption on binary alloys Interplay between thermal percolation and jamming upon dimer adsorption on binary alloys

2007-06-04

arxiv.org/abs/0706.0562v1

Phys. Rev. E 74, 051601 (2006)

Physics

Condensed Matter

Statistical Mechanics

20 pages, 10 figures

Scientific paper

10.1103/PhysRevE.74.051601

Using Monte Carlo simulations we study jamming and percolation processes upon the random sequential adsorption of dimers on binary alloys with different degrees of structural order. We obtain the equimolar mixtures used as substrates by applying the isomorphism between an alloy and the Ising model (conserved order parameter). The annealing temperature $T$ of the mixture then is a continuous parameter that characterizes the different sets of substrates, shaping the deposition process. As the alloy undergoes an order-disorder phase transition at the Onsager critical temperature ($T_{c}$), the jamming and percolating properties of the dimers deposited over the substrate are subjected to non-trivial changes. These are reflected in a density-temperature phase diagram with three well-defined regions. We find that for $T < T^* = 1.22 T_{c}$ the occurrence of jamming prevents the onset of percolating clusters, while percolation is possible for $T > T^{*}$. Particular attention is focused close to $T^{*}$, where the interplay between jamming and percolation restricts fluctuations, forcing exponents seemingly different from the standard percolation universality class. By analogy with a thermal transition, we study the onset of percolation by using the {\it temperature} (in this case, the substrate annealing temperature) as a control parameter. By proposing thermal scaling Ansatzes we analyze the behavior of the percolation threshold and its thermally induced fluctuations. Also, the fractal dimension of the percolating cluster is determined. Based on these measurements and the excellent data collapsing, we conclude that the universality class of standard percolation is preserved for all temperatures.

Affiliated with

Also associated with

No associations

Rating

Interplay between thermal percolation and jamming upon dimer adsorption on binary alloys 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 Interplay between thermal percolation and jamming upon dimer adsorption on binary alloys, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Interplay between thermal percolation and jamming upon dimer adsorption on binary alloys will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-121610