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Statics and dynamics of “soft” impurities in a crystal

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Zeitschrift für Physik B Condensed Matter

Abstract

We investigate the effect of an impurity on the local static and dynamic behaviour of a crystal undergoing a displacive phase transition. It is shown that in mean-field approximation there may occur a freezing-out of local order driven by a soft local mode above the phase transition of the host. For a crystal containing a dilute impurity concentration, the impurity contribution to the static structure factor is calculated. The results are discussed in detail for the specific cases of a displacive and an Ising-type impurity.

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References

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Authors and Affiliations

  1. Institut für Physik, Universität Basel, Klingelbergstrasse 82, CH-4056, Basel, Switzerland

    K. -H. Höck & H. Thomas

Authors
  1. K. -H. Höck
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  2. H. Thomas
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Work supported by the Swiss National Science Foundation

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Höck, K.H., Thomas, H. Statics and dynamics of “soft” impurities in a crystal. Z Physik B 27, 267–271 (1977). https://doi.org/10.1007/BF01325538

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  • DOI: https://doi.org/10.1007/BF01325538

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