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Figure 3 | Nanoscale Research Letters

Figure 3

From: Ge/Si(001) heterostructures with dense arrays of Ge quantum dots: morphology, defects, photo-emf spectra and terahertz conductivity

Figure 3

STM empty-state images of high-temperature pyramids. Tgr=650℃; (a) 87×87 nm, steps of the incomplete upper left facet, running normal to the base side, are seen near the left corner of the pyramid; (b) 87×87 nm, a cluster with edges split near the base and an apex formed by a set of incomplete {105} facets; (c) 57×57 nm, a magnified image of a facet with several {105} incomplete facets near an apex; (d) 22×22 nm, a split edge near a base.

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