M. V. Ryzhkova, S. G. Azatyan, N. V. Denisov, D. A. Tsukanov
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Structural Studies of 2 × 2-(Bi,Mg) Reconstruction on the Si(111) Surface
To study the crystal structure of the Si(111) 2 × 2-(Bi,Mg) surface reconstruction, formed during the adsorption of magnesium on the Si(111) \(\sqrt 3 \times \sqrt 3 \)-Bi surface phase, ab initio calculations have been performed. The stoichiometric composition of the unit cell of the 2 × 2 surface reconstruction has been determined. Using the calculated formation energies, the most stable structures for the two-dimensional Bi\(_{X}\)Mg\(_{Y}\) alloy have been identified. It has been shown that the structural model with the configuration \(X = 2\) and \(Y = 4\) is in good agreement with the low-energy electron diffraction and scanning tunneling microscopy results observed for the reconstructed Si(111) 2 × 2-(Bi,Mg) surface.
期刊介绍:
All topics of experimental and theoretical physics including gravitation, field theory, elementary particles and nuclei, plasma, nonlinear phenomena, condensed matter, superconductivity, superfluidity, lasers, and surfaces.