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Do Dislocation Loops Destroy Facet Flatness?

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Abstract

Following our discovery of a new surface state near the facet edges of 4 He crystals, it was argued that thermally excited dislocation loops could destroy the facet flatness. Recent measurements of facet profiles of very small 4 He crystals indicate that the activation energy of these loops would have to be more than 20 K, which is quite high. The possible consequences of this result are discussed.

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Authors and Affiliations

  1. Low Temperature Laboratory, Helsinki University of Technology, Otakaari 3 A, Espoo, P.O.Box 2200, FI-02015 HUT

    J.P. Saramäki, A.V. Babkin, P.J. Hakonen, R.M. Luusalo & A. Ya. Parshin

  2. Kapitza Institute for Physical Problems, ul. Kosygina 2, 117334, Moscow, Russia

    A. Ya. Parshin

Authors
  1. J.P. Saramäki
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  2. A.V. Babkin
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  3. P.J. Hakonen
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  4. R.M. Luusalo
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  5. A. Ya. Parshin
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Saramäki, J., Babkin, A., Hakonen, P. et al. Do Dislocation Loops Destroy Facet Flatness?. Journal of Low Temperature Physics 110, 141–146 (1998). https://doi.org/10.1023/A:1022531204916

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  • DOI: https://doi.org/10.1023/A:1022531204916

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