MAKE A MEME View Large Image GaSb spiral growth.jpg en A scanning tunneling microscopy image of the surface of a 4 um-thick GaSb film grown by molecular beam epitaxy on GaAs 001 The image 0 5 um x 0 5 um was acquired in situ following growth of the film Spiral-like ...
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Keywords: GaSb spiral growth.jpg en A scanning tunneling microscopy image of the surface of a 4 um-thick GaSb film grown by molecular beam epitaxy on GaAs 001 The image 0 5 um x 0 5 um was acquired in situ following growth of the film Spiral-like structures such as the one seen here grow around threading dislocations in the film caused by the 7 lattice mismatch with the substrate Note the pair of dislocations emerging from the surface at the top of the spiral along with a third emerging half-way down on the side; each one creates a 0 3 nm-height step In situ atomic-scale characterization is an important component in the development of growth procedures that minimize the dislocation density in heteroepitaxial layers http //www nrl navy mil/techtransfer/Exhibits/science html P M Thibado B R Bennett B V Shanabrook and L J Whitman PD-USGov-Military-Navy Natural spirals Dislocations in crystals Scanning tunneling microscope images
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