Abstract
Abstract The electronic band structure of the Si(3 3 5)–Au surface decorated with Pb atoms was studied with angle resolved photoelectron spectroscopy (ARPES) in ultra high vacuum (UHV) conditions. The photoemission spectra were measured in two perpendicular directions, along and across the steps. In the direction parallel to the step edges the ARPES spectra show strongly dispersive electron energy band while in the perpendicular direction there is no electronic dispersion at all. This confirms one-dimensional character of the system. The theoretical band dispersion calculated within a tight-binding model was fitted to that obtained from the experiment.
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