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STM images recorded at a sample bias and a tunneling current for different coverages of Au grown on the substrate. (a) 0.05 ML Au deposited at RT. The substrate and the coexisting Au/Pb overlayer are marked by “A” and “B,” respectively. (b) The zoomed-in STM image ( , ) of the island in the region marked B in (a). (c) The histogram of height distribution showing the height difference of the substrate and the Au/Pb overlayer in (a). (d) STM image ( , ) showing the well-ordered honeycomb structure of the surface in region A. (e) STM image ( , ) showing the structure of a transition phase from the to the HIC-Pb phase after 0.25 ML Au deposition on the surface at RT. (f) Image of the surface following 0.65 ML Au deposited at RT. (g) The height profile along the line marked in (f).
STM images of the structure obtained with (a) and (b) . The two images are acquired from the same region. The parallelograms indicate the cell.
STM images of the well-ordered superstructure. (a) Image size is and tunneling parameters are −0.6 V and 0.02 nA. (b) Zoomed-in image showing the ring feature of the surface obtained using −0.3 V and 0.02 nA.
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