Sulfur chemisorption on Ni(111): The clock structure of the (5√3×2)S phase
- 15 September 1994
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 50 (12) , 8950-8953
- https://doi.org/10.1103/physrevb.50.8950
Abstract
From an interplay between x-ray diffraction and scanning tunneling microscopy the atomic structure of the (5√3×2)S reconstruction on Ni(111) has been revealed. It consists of four squarelike tetramers of Ni atoms, rotated in pairs ∼14° clockwise and counterclockwise, onto which eight fourfold-coordinated S atoms are chemisorbed. The results have a significant bearing on the understanding of the detailed structure of postulated pseudo-(100) reconstructions of fcc(111) surfaces and support a general principle of increased adsorbate coordination as being decisive for the reconstruction.Keywords
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