Molecular-Dynamics Investigation of Structural Phase Transitions

12 November 1973

journal article
research article
Published by American Physical Society (APS) in Physical Review Letters

Vol. 31 (20), 1254-1258
https://doi.org/10.1103/physrevlett.31.1254

Abstract

We report on a molecular-dynamics study of a two-dimensional model system which is expected to exhibit antiferrodistortive structural phase transitions. The estimated values for the critical exponents

β

and

γ

are close to those of the two-dimensional Ising model. The origin of a central peak in the dynamic form factor is attributed to the formation and the dynamics of clusters.

Keywords

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