Image-potential-induced states at metal surfaces
Echenique, P. M. · Pitarke, J. M. · Chulkov, E. V. · Silkin, V. M.
Original · EN
The unequivocal observation in the early 1980s of a new class of unnocupied surface states that are bound to the vacuum level of a variety of metal surfaces has led over the last two decades to an active area of research in condensed-matter and surface physics. We discuss the key ingredients of the theory of these so-called image states, which have their origin in the long range nature of the image potential outside a solid.
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