Initial growth of Au on Ni(110): Surface alloying of immiscible metals

L. Pleth Nielsen, Flemming Besenbacher, I. Stensgaard, E. Laegsgaard, C. Engdahl, Per Stoltze, Karsten Wedel Jacobsen, Jens Kehlet Nørskov

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Abstract

Atomic resolution scanning tunneling microscopy of Au deposited on Ni(110) shows that even though Au is completely insoluble in bulk Ni, it replaces Ni in the first surface layer forming a surface Au-Ni alloy and the squeezed out Ni atoms agglomerate in Ni islands on the surface. This picture is supported by total energy calculations within the effective-medium theory, which also provide a detailed understanding of this surprising phenomenon.
Original languageEnglish
JournalPhysical Review Letters
Volume71
Issue number5
Pages (from-to)754-757
ISSN0031-9007
DOIs
Publication statusPublished - 1993

Bibliographical note

Copyright (1993) by the American Physical Society.

Keywords

  • AG(110)
  • ISLANDS

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