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Spectroscopic ellipsometry has been used to follow the initial stages of the growth of Au on both singular and vicinal Si(111) surfaces. The imaginary part of the pseudo dielectric function shows an distinctive sharp peak at 2.7 eV, at the point where the single-domain pseudo-5 1 low energy electron diffraction pattern is strongest for Au growth on the stepped Si(111) surface. The singular system...
Angle-resolved photoemission spectroscopy (ARPES), using HeI radiation, has been used to probe the occupied electronic states from a single domain of the Au-induced 5 2 reconstruction of Si(111), a quasi-one-dimensional (quasi-1D) metallic system. The ARPES spectra recorded parallel (perpendicular) to the Au chain structure show a signature of a metallic (non-metallic) system. These experimental...
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