Atomic-Scale Determination of Misfit Dislocation Loops at Metal-Metal Interfaces

Joachim Jacobsen, L. Pleth Nielsen, Flemming Besenbacher, Ivan Stensgaard, Erik Lægsgaard, Torben Rasmussen, Karsten Wedel Jacobsen, Jens Kehlet Nørskov

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Abstract

The growth of one monolayer of Au on Ni(111) is shown to lead to an ordered array of misfit dislocation loops in the underlying Ni(111) surface. The signature of these loops is observed by scanning tunneling microscopy, and atomistic simulations are used to relate the observed surface structure to that of the buried interface. The new interface structure is different from normal misfit dislocation structures in three respects: (i) it forms already during growth of a single Au monolayer, (ii) it forms in the substrate and not in the overlayer, and (iii) it is controlled by the interface energy rather than by the strain in the two phases.
Original languageEnglish
JournalPhysical Review Letters
Volume75
Issue number3
Pages (from-to)489-492
ISSN0031-9007
DOIs
Publication statusPublished - 1995

Bibliographical note

Copyright (1995) by the American Physical Society.

Keywords

  • SURFACE
  • AU(111)

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