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

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

Research output: Contribution to journalArticle

47 Citations (Scopus)

Abstract

Conditions for a transition from ergodic to non-ergodic dynamics in the scalar lattice φ4-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

Fingerprint

Phase transitions
transition points
high strength
coupled modes
Anisotropy
scalars
anisotropy
approximation

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Condensed Matter Physics

Cite this

Non-ergodic behaviour and localisation in a structural phase transition model. / Aksenov, V.; Bobeth, M.; Plakida, N. M.; Schreiber, J.

In: Journal of Physics C: Solid State Physics, Vol. 20, No. 3, 30.01.1987, p. 375-386.

Research output: Contribution to journalArticle

Aksenov, V. ; Bobeth, M. ; Plakida, N. M. ; Schreiber, J. / Non-ergodic behaviour and localisation in a structural phase transition model. In: Journal of Physics C: Solid State Physics. 1987 ; Vol. 20, No. 3. pp. 375-386.
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