Physics – Condensed Matter – Soft Condensed Matter
Scientific paper
2011-01-31
Physical Review E, 83, 051506 (2011)
Physics
Condensed Matter
Soft Condensed Matter
Scientific paper
A free-energy functional that contains both the symmetry conserved and symmetry broken parts of the direct pair correlation function has been used to investigate the freezing of a system of hard spheres into crystalline and amorphous structures. The freezing parameters for fluid-crystal transition have been found to be in very good agreement with the results found from simulations. We considered amorphous structures found from the molecular dynamics simulations at packing fractions $\eta$ lower than the glass close packing fraction $\eta_{J}$ and investigated their stability compared to that of a homogeneous fluid. The existence of free-energy minimum corresponding to a density distribution of overlapping Gaussians centered around an amorphous lattice depicts the deeply supercooled state with a heterogeneous density profile.
Bharadwaj Atul S.
Singh Swarn Lata
Singh Yashwant
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