Rotational epitaxy vs. missing row reconstruction: Au/Cu/Au(110)

From scanning tunneling microscopy and ion scattering spectroscopy, it is found that Cu deposition on Au(110)-(1 × 2) at 300 K leads to a sandwich structure with Cu atoms occupying sites in the second layer and Au atoms on top. At around θ Cu = 1.3 ML a new, stable phase with s-shaped chains of Au a...

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Bibliographic Details
Published in:Surface science 1997-10, Vol.388 (1), p.L1100-L1106
Main Authors: Hugenschmidt, M.B., Ruff, M., Hitzke, A., Behm, R.J.
Format: Article
Language:English
Subjects:
Applied sciences
Condensed matter: structure, mechanical and thermal properties
Copper
Epitaxy
Exact sciences and technology
Gold
Ion scattering spectroscopy
Metals. Metallurgy
Physics
Reconstruction
Sandwich structure
Scanning tunneling microscopy
Solid surfaces and solid-solid interfaces
Surface alloy formation
Surface structure and topography
Surfaces and interfaces
thin films and whiskers (structure and nonelectronic properties)
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Summary:From scanning tunneling microscopy and ion scattering spectroscopy, it is found that Cu deposition on Au(110)-(1 × 2) at 300 K leads to a sandwich structure with Cu atoms occupying sites in the second layer and Au atoms on top. At around θ Cu = 1.3 ML a new, stable phase with s-shaped chains of Au atoms in the surface layer, slightly rotated with respect to [11̄0], is formed. This phase can be considered as a case of rotational epitaxy on the strongly anisotropic fcc(110) surface. Energetic contributions responsible for its formation are discussed.
ISSN:0039-6028
1879-2758
DOI:10.1016/S0039-6028(97)00470-6