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(a) Side view of the bulk truncated surface in side view with surface unit cell and bulk unit cell indicated. (b) Top view of this surface with the , , and unit cells indicated (left, right, and bottom). Hatched and cross-hatched strips indicate areas of different bond coordination of the topmost C atoms.
LEED patterns of at electron energy, (a) after hydrogen etching, (b) for the phase, (c) for the phase, and (d) for the high temperature phase. (e) Differentiated AES spectra for the four phases. (f) Si and (g) C core level spectra for the four phases recorded at photon energies of 140 and , respectively. The curves underneath show the components obtained from the line-shape analysis.
STM micrographs of (a) the reconstruction on (, FFT-filtered, tip bias, ) and (b) the reconstruction (, , ).
(a) Normal emission VB spectra from different phases of , using photon energies of 40 and . [(b) and (c)] ARUPS recorded at emission angles (b) from to along the direction with 1° step and (c) from to along the direction with 2° steps, respectively, using a photon energy of . The surface Brillouin zone is shown at the top of panel(c).
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