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Critical dynamics in the presence of relaxing defects

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Zeitschrift für Physik B Condensed Matter

Abstract

The influence of defects coupling linearly to the order parameter on the critical behaviour of structural phase transitions is studied. A continuum model for the statics and dynamics is introduced and is investigated by the renormalization group theory. If the defects are slow a central peak is found, the characteristic width of which is determined by the defects. Concerning the critical behaviour the dynamical model belongs to the same universality class as the one studied previously by Grinstein, MA, and Mazenko. The concentration dependence of the central peak response is discussed inside and outside the critical region.

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Author information

Author notes

  1. L. Sasvári

    Present address: Institute for Theoretical Physics, Eötvös University, Budapest, Hungary

  2. F. Schwabl

    Present address: Institut für Theoretische Physik, Physik-Department, Technische Universität München, James-Franck-Strasse, D-8046, Garching, FRG

Authors and Affiliations

  1. Theoretische Physik, Universität des Saarlandes, D-6600, Saarbrücken, Federal Republic of Germany

    L. Sasvári

  2. Institut für Theoretische Physik der Universität, A-4040, Linz, Austria

    F. Schwabl

Authors
  1. L. Sasvári
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  2. F. Schwabl
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Sasvári, L., Schwabl, F. Critical dynamics in the presence of relaxing defects. Z. Physik B - Condensed Matter 46, 269–283 (1982). https://doi.org/10.1007/BF01360304

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  • DOI: https://doi.org/10.1007/BF01360304

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