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Persistent URL
http://purl.org/net/epubs/work/30271
Record Status
Checked
Record Id
30271
Title
Site exchange in ultrathin layers of Ni on Cu(100) studied with element-specific layer-by-layer resolution
Contributors
TCQ Noakes (CCLRC Daresbury Lab.)
,
P Bailey (CCLRC Daresbury Lab.)
,
G van der Laan (CCLRC Daresbury Lab.)
Abstract
We use medium-energy ion scattering to determine the composition of each of the topmost three atomic layers of a single crystal of copper coated with an epitaxial submonolayer of nickel as a function of anneal temperature in the range 140-420 K. The technique confers layer and elemental resolution even though the constituents are adjacent in the Periodic Table. At a transition temperature of around 300 K, subsurface copper and surface nickel interchange so that the nickel comes to reside almost exclusively in the subsurface layer, and the top layer of the crystal becomes almost purely copper. Implications of the result for magnetic measurements are briefly sketched.
Organisation
CCLRC
,
SND
,
MEIS
Keywords
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Language
English (EN)
Type
Details
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Year
Journal Article
Phys Rev B
67 (2003): 153401 -1534015.
doi:10.1103/PhysRevB.67.153401
2003
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