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    • M P Gokhale

      Articles written in Bulletin of Materials Science

    • Volume 22 Issue 2 April 1999 pp 95-101 Surfaces

      Comparative study of adatom induced relaxations and energetics for Si, Ge and carbon adsorption on a (2×1) Si(001) surface

      U P Wad A V Limaye M P Gokhale S B Ogale

      More Details Abstract Fulltext PDF

      Surface complexes involving silicon, germanium and carbon adatom on predefined adsorption sites of the 2×1 reconstructed Si(001) surface are investigated for their energetics and associated structural relaxations. Tersoff’s semi-empirical potential is used and the relaxations are obtained by employing the Monte Carlo simulated annealing technique. The results for the cases of Si, Ge and carbon adsorptions are compared. It is found that Si and Ge as adatoms on Si(001) 2×1 reconstructed surface behave in a similar fashion but the carbon adatom behaves in a markedly different way. Specifically, the carbon adatom induces a Si-C-Si chain configuration. It is also found that the adsorption sites between two dimer rows are the most favourable ones.

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      Posted on July 25, 2019

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