Crystallization in a model glass: influence of the boundary conditions

Details Crystallization in a model glass: influence of the boundary conditions Crystallization in a model glass: influence of the boundary conditions

1998-05-22

arxiv.org/abs/cond-mat/9805292v1

Physics

Condensed Matter

Disordered Systems and Neural Networks

11 pages, 2 figures

Scientific paper

10.1209/epl/i1998-00298-x

Using molecular dynamics calculations and the Voronoi tessellation, we study the evolution of the local structure of a soft-sphere glass versus temperature starting from the liquid phase at different quenching rates. This study is done for different sizes and for two different boundary conditions namely the usual cubic periodic boundary conditions and the isotropic hyperspherical boundary conditions for which the particles evolve on the surface of a hypersphere in four dimensions. Our results show that for small system sizes, crystallization can indeed be induced by the cubic boundary conditions. On the other hand we show that finite size effects are more pronounced on the hypersphere and that crystallization is artificially inhibited even for large system sizes.

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