Non-ergodic behaviour and localisation in a structural phase transition model

V. L. Aksenov, M. Bobeth, N. M. Plakida, J. Schreiber

Research output: Article

47 Citations (Scopus)

Abstract

Conditions for a transition from ergodic to non-ergodic dynamics in the scalar lattice phi 4-model are investigated. Within the mode-coupling approximation it is found that for sufficiently high strength and anisotropy of the couplings the system exhibits non-ergodic behaviour due to localisation of order parameter fluctuations in a relatively broad region around the ferrodistortive phase transition point. The appearance of precursor clusters and the anomalous narrow central-peak phenomena are explained naturally in terms of dynamic non-ergodicity of local order parameters.

Original languageEnglish
Pages (from-to)375-386
Number of pages12
JournalJournal of Physics C: Solid State Physics
Volume20
Issue number3
DOIs
Publication statusPublished - jan. 30 1987

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ASJC Scopus subject areas

  • Condensed Matter Physics
  • Engineering(all)
  • Physics and Astronomy(all)

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