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STM images of the Si(111) surface with 0.01 ML of Sr adsorbed at ., . (a) The image shows two RDs of the striped structure and below the clean reconstruction is visible. The inset shows a high resolution STM image of a single domain structure with the unit cell outlined. (b) STM image of the reconstruction ADs with the respective unit cells outlined.
Schematic showing the unit cells of various reconstructions found in this work and their respective ADs.
Set of STM images of the Si(111) surface with increasing Sr coverage., . (a) Sr coverage is 0.04 ML, . The image shows domains of the , , , and reconstructions coexistent on the surface. (b) Sr coverage is 0.15 ML, . The image shows the structure and two RDs of the striped reconstruction. (c) Sr coverage is 0.4 ML, . The three possible RDs of the structure are visible. The inset shows a high resolution STM image of the structure with unit cell outlined.
Fourier transform obtained from the STM images of Si(111) surfaces with striped reconstruction. (a) Results obtained from single domain reconstruction. (b) Results obtained when ADs are present. The reciprocal unit cell is plotted and the integral order spots are highlighted. Note the absence of the spots of order in (b).
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