Abstract
High-resolution photoemission spectra of an array of one-dimensional (1D) metallic chains created on Si(335) reveal characteristic features precluding any interpretation within known theoretical models. The origin of this dilemma is attributed to imperfections acting as boundaries in 1D systems. A simple model calculation including a Coulomb shift in the photoemission final state of chain segments yields straight simulations of our spectra and is likely to clarify the confusing situation encountered in this field.
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