Journal article
Static lattice distortions and the structure of Au/Si(111)-(5x1): An x-ray-diffraction study
Grazing-incidence x-ray diffraction has been used to determine the atomic arrangement in the 5 x 1 structure of Au on Si(111). The main features of this structure are partially occupied rows of gold atoms in low-symmetry sites. The density of Au atoms is highly asymmetric in the direction perpendicular to the rows.
The substrate atoms in the top double layer are shifted up to 1 angstrom from their bulk position. The structure has a disordered 5 x 2 periodicity due to the variation of the interatomic Au-Au distances within a row in the [011BAR] direction. The model is consistent with recent scanning-tunneling-microscopy topographs.
Language: | English |
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Year: | 1991 |
Pages: | 12130-12133 |
ISSN: | 10953795 , 01631829 , 1550235x and 10980121 |
Types: | Journal article |
DOI: | 10.1103/PhysRevB.43.12130 |