Phase transitions in a system of hard Y-shaped particles on the triangular lattice

Physical Review. E
Dipanjan MandalR Rajesh

Abstract

We study the different phases and the phase transitions in a system of Y-shaped particles, examples of which include immunoglobulin-G and trinaphthylene molecules, on a triangular lattice interacting exclusively through excluded volume interactions. Each particle consists of a central site and three of its six nearest neighbors chosen alternately, such that there are two types of particles which are mirror images of each other. We study the equilibrium properties of the system using grand canonical Monte Carlo simulations that implement an algorithm with cluster moves that is able to equilibrate the system at densities close to full packing. We show that, with increasing density, the system undergoes two entropy-driven phase transitions with two broken-symmetry phases. At low densities, the system is in a disordered phase. As intermediate phases, there is a solidlike sublattice phase in which one type of particle is preferred over the other and the particles preferentially occupy one of four sublattices, thus breaking both particle symmetry as well as translational invariance. At even higher densities, the phase is a columnar phase, where the particle symmetry is restored, and the particles preferentially occupy even or odd row...Continue Reading

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Jan 20, 2018·Physical Review. E·Dipanjan Mandal, R Rajesh

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Citations

Jul 16, 2019·The Journal of Chemical Physics·Nathann T Rodrigues, Tiago J Oliveira
Jun 20, 2019·Physical Review. E·N VigneshwarR Rajesh
Jul 22, 2020·Physical Review. E·Filipe C Thewes, Heitor C M Fernandes
Dec 17, 2020·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Jing-Rong WangChang-Jin Zhang
Apr 18, 2021·Physical Review. E·Nathann T Rodrigues, Tiago J Oliveira
May 20, 2021·Physical Review. E·Deepak Dhar, R Rajesh

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