Single atomic steps on SiC polished surfaces
نویسندگان
چکیده
منابع مشابه
Optical recognition of atomic steps on surfaces.
Visible and UV light spectra display striking differences in optical reflectivity for the two types of monatomic steps on copper (111) surfaces. Electronic structure calculations trace these differences to the specific contributions of p(axially) and p(radially) local densities of states, parallel and perpendicular to the steps, of the distinctly coordinated corner atoms. The local origin of th...
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Calcium fluoride (111) single crystals for ultra violet applications have been finished to flat by the float polishing process with 7nm-diameter silicon dioxide powder, pure water and a tin lap. The flatness of 32nm P-V on 90-mm-diameter samples that had a surface roughness of 0.72 nm Ry, and 0.077 nm rms were obtained. High-resolution transmission electron microscopy study of the cross-section...
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The problem addressed here can be concisely formulated as follows: Given a stable surface orientation with a known reconstruction and given a direction in the plane of this surface, find the atomic structure of the steps oriented along that direction. We report a robust and generally applicable variable-number genetic algorithm for determining the atomic configuration of crystallographic steps,...
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Fluctuations of isolated and pairs of ascending steps of monoatomic height are studied in the framework of SOS models, using mainly Monte Carlo techniques. Below the roughening transistion of the surface, the profiles of long steps show the same scaling features for terrace and surface diffusion. For a pair of short steps, their separation distance is found to grow as t at late stages. Above ro...
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ژورنال
عنوان ژورنال: III-Vs Review
سال: 2002
ISSN: 0961-1290
DOI: 10.1016/s0961-1290(02)85150-x