Sb-induced bulk band transitions in Si(111) and Si(001) observed in synchrotron photoemission studies

Abstract
The Sb saturation of Si(111) and Si(001) was found by angle-resolved photoemission to allow the measurement of the bulk band-dispersion relations along the high-symmetry ΓΛL and ΓΔX directions over a wide photon-energy range. Core-level spectroscopy revealed that the Si atoms in the near-surface region are converted to exhibit a bulklike atomic arrangement after Sb coverage. Strain reduction mechanisms in the near-surface region are addressed.