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- W2086388879 abstract "A photoemission study using synchrotron radiation of the (0001) surface of 4H-SiC is reported. The investigations were concentrated on the (√3 × √3)-R30° and (6√3 × 6√3)-R30° reconstructed surfaces, prepared by resistive heating at a temperature of about 1000°C and 1250°C, respectively. Results from surfaces heated at intermediate temperatures, exhibiting a mixture of these reconstructions, and after heating at a higher temperature, when graphitisation is clearly observed, are also presented. The √3 and 6√3 reconstructed surfaces exhibit characteristic core level and valence band spectra. High resolution core level spectra show unambiguously the presence of surface shifted components in both the Si 2p and C 1s core levels. For the √3 reconstruction, two surface shifted components are observed both in the Si 2p and C 1s level. For the 6√3 reconstruction, the surface region is found to contain a considerably larger amount of carbon. This carbon is found not to be graphitic since surface C 1s components with binding energies different from a graphitic C 1s peak are observed. Graphitisation, as revealed by the appearance of a graphitic C 1s peak, is observed only after heating to a higher temperature than that required for obtaining a well developed 6√3 diffraction pattern." @default.
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- W2086388879 date "1996-07-01" @default.
- W2086388879 modified "2023-09-26" @default.
- W2086388879 title "A photoemission study of 4HSiC(0001)" @default.
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- W2086388879 doi "https://doi.org/10.1016/0039-6028(96)00702-9" @default.
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