A study of cooling in a system with several ground states. / Estudo do resfriamento em um sistema com múltiplos estados fundamentais

AUTOR(ES)
DATA DE PUBLICAÇÃO

2007

RESUMO

We study a coupled two level systems as a model that imitate the behavior of supercooled liquids that become structural glasses under cooling. In the equilibrium the model shows a liquid phase and a crystalline phase with many grouond states. The model is defined on a square lattice and to each site a stochastic Ising variable is associated. The feature that makes this model particularly interesting is that it display durable metastables states which can vanish within the time available for numerical simulations. In order to imitate the glass former process, we perform Monte Carlo simulations at constant cooling rate. We present also simulations for quenchs to temperatures below the melting temperature.

ASSUNTO(S)

metastable states. phase transition metropolis algorithm algoritmo de metropolis vidros glasses transições de fase estados metaestáveis

ACESSO AO ARTIGO

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