Nanodot Formation on the-Surface by Adatom Trapping
- 12 July 1999
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 83 (2) , 316-319
- https://doi.org/10.1103/physrevlett.83.316
Abstract
The formation of a superlattice of metallic nanoclusters consisting of nine adatoms each is reported for thallium on the surface. It is proposed that mobile adatoms are trapped in attractive potential wells on the faulted half of the unit cell. Adatom-adatom and adatom-substrate interactions combine within these basins of attraction to create the observed metallic bonding situation. From quasiequilibrium thermodynamic considerations, the energy difference between adsorption on the faulted and unfaulted unit cell halves, that yields the ordered superstructure array, is estimated to 0.075 eV.
Keywords
This publication has 16 references indexed in Scilit:
- Substitutional geometry and strain effects in overlayers of phosphorus on Si(111)Physical Review B, 1998
- Adsorption and diffusion mechanisms of Pb on Si(111)-(7 × 7) in the initial stages of Pb chemisorptionSurface Science, 1998
- A Scanning Tunneling Microscopy Investigation of Adsorption and Clustering of Potassium on the Si(111)7×7 SurfaceJapanese Journal of Applied Physics, 1998
- Intermittent diffusion on the reconstructed Si(111) surfaceEurophysics Letters, 1997
- Electron Fringes on a Quantum WedgePhysical Review Letters, 1997
- Real-Time Observation of the Dynamics of Single Pb Atoms onby Scanning Tunneling MicroscopyPhysical Review Letters, 1996
- Scanning-tunneling-microscopy study of Pb on Si(111)Physical Review B, 1995
- Submonolayer phases of Pb on Si(111)Physical Review B, 1991
- Initial Stage of Ag Condensation on Si(111)7×7Physical Review Letters, 1988
- Surface Reconstruction and the Nucleation of Palladium Silicide on Si(111)Physical Review Letters, 1988