Communication: Pair interaction ordering in fluids with random interactions

LS Shagolsem and D Osmanovic and O Peleg and Y Rabin, JOURNAL OF CHEMICAL PHYSICS, 142, 051104 (2015).

DOI: 10.1063/1.4907730

We use molecular dynamics simulations in 2D to study multi-component systems in the limiting case where all the particles are different (APD). The particles are assumed to interact via Lennard-Jones potentials, with identical size parameters but their pair interaction parameters are generated at random from a uniform or from a peaked distribution. We analyze both the global and the local properties of these systems at temperatures above the freezing transition and find that APD fluids relax into a non-random state characterized by clustering of particles according to the values of their pair interaction parameters (particle-identity ordering). (C) 2015 AIP Publishing LLC.

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