Chemisorption-Site Geometry from Polarized Photoemission: Si(111)Cl and Ge(111)Cl
- 13 December 1976
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 37 (24) , 1632-1635
- https://doi.org/10.1103/physrevlett.37.1632
Abstract
The chemisorption-site geometries for chlorine on cleaved Si(111) 2×1 and Ge(111) 2×1 surfaces have been determined by comparing detailed pseudopotential calculations with energy distribution spectra and polarization selection rules of photoemission spectroscopy. Strong -symmetry polarization effects observed in photoemission allow us to determine that on Si(111) the correct geometry is a onefold covalent site while on Ge(111) the Cl is in a threefold coordinated ionic site.
Keywords
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