Strain relief through heterophase interface reconstruction: Ag(111)/Ru(0001).
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.
Ling
W L
WL
Sandia National Laboratories, Livermore, California 94550, USA.
de la Figuera
J
J
Bartelt
N C
NC
Hwang
R Q
RQ
Schmid
A K
AK
Thayer
G E
GE
Hamilton
J C
JC