Atomic Arrangements at Metal Surfaces

The termination of a solid induces changes in the locations of the outermost atoms of the solid. The changes can be minor or as dramatic as the rearrangement of the atoms into a different crystallographic group. Surface crystallography studies have determined that all surfaces are altered by forces...

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Bibliographic Details
Published in:Science (American Association for the Advancement of Science) 1986-10, Vol.234 (4774), p.310-316
Main Authors: Noonan, J. R., Davis, H. L.
Format: Article
Language:English
Subjects:
Alloys
Aluminum
Atoms
Atoms & subatomic particles
Crystallography
Crystals
Electrons
Light beams
Metal surfaces
Metals
Modeling
R factors
Semiconductors
Spectroscopic analysis
Surface science
Surfaces
Surfaces (Physics)
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Summary:The termination of a solid induces changes in the locations of the outermost atoms of the solid. The changes can be minor or as dramatic as the rearrangement of the atoms into a different crystallographic group. Surface crystallography studies have determined that all surfaces are altered by forces induced at the solid-vacuum interface. At the least, the outermost atomic layers are displaced away from positions that they would have had in the bulk environment. Results from experimental and theoretical investigations for the Al(110) surface are discussed to illustrate present understanding of the surface atomic displacements. Some effects that the truncation-induced forces have on the surfaces of binary metal alloys are also discussed.
ISSN:0036-8075
1095-9203
DOI:10.1126/science.234.4774.310