Soft mode and clusters in a model (one-dimensional) for displacive phase transitions

V. L. Aksenov, A. Yu Didyk, V. Yu Yushankhai

Research output: Contribution to journalArticle

2 Citations (Scopus)


The temperature dependence of the soft-phonon mode frequency in a one-dimensional scalar ø4 -model is considered in the displacive limit. The self-consistent description for the cluster walls and lattice vibrations with the account of the kink-phonon and phonon-phonon interactions is given in the framework of the variational method for the free energy. It is shown that the soft-mode frequency increases as T → Tc (= 0).

Original languageEnglish
Pages (from-to)825-828
Number of pages4
JournalSolid State Communications
Issue number8
Publication statusPublished - Nov 1981

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

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