Publication
Physical Review Letters
Paper

Molecular-dynamics study of a two-dimensional ferrodistortive XY model with quartic anisotropy

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Abstract

We give numerical evidence that in a two-dimensional lattice-dynamical XY model with quartic anisotropy a conventional continuous phase transition occurs. The formation of clusters in the angular displacement field separated by 90°walls is also demonstrated. Moreover, we give evidence that the critical dynamics of the order-parameter fluctuations is dominated by a central peak which splits at finite wave vectors. This phenomenon is traced back to damped traveling 90°walls. © 1976 The American Physical Society.

Date

21 Jun 1976

Publication

Physical Review Letters

Authors

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