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The surface structure of Si(111)–6×1-Ag was investigated using surface X-ray diffraction techniques. By analyzing the CTR scattering intensities along 00 rod, the positions of the Ag and reconstructed Si atoms perpendicular to the surface were determined. The results agreed well with the HCC model proposed for a 3×1 structure induced by alkali-metals on a Si(111) substrate. The heights of the surface...
We have determined the structure of the 4H–SiC(0001)-3×3 surface after exposure to small amounts of molecular oxygen at room temperature using surface X-ray diffraction. The 3×3 reconstruction remains until at least an exposure of 10,000L, but the diffracted intensities change, indicating structural changes. Comparison of the Patterson maps of the clean and oxidized surface shows that the main changes...
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