Strain relief through heterophase interface reconstruction: Ag(111)/Ru(0001).

نویسندگان

  • W L Ling
  • J de la Figuera
  • N C Bartelt
  • R Q Hwang
  • A K Schmid
  • G E Thayer
  • J C Hamilton
چکیده

We report an experimental (scanning tunneling microscopy) and theoretical (embedded atom method) study of a heterophase interface reconstruction between Ag(111) and Ru(0001). Despite the large 7% mismatch, the second layer of Ag from the Ru exhibits a hexagonal structure with Ag bulk spacing, providing a close match to bulk Ag. The first layer of Ag (next to Ru) is reconstructed in a highly symmetrical and regular structure containing monolayer long threading dislocations. We argue that this structure may generally occur to relieve strain in a certain class of heterophase interfaces.

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عنوان ژورنال:
  • Physical review letters

دوره 92 11  شماره 

صفحات  -

تاریخ انتشار 2004