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.
Cite
@article{arxiv.cond-mat/0207281,
title = {Image-potential-induced states at metal surfaces},
author = {P. M. Echenique and J. M. Pitarke and E. V. Chulkov and V. M. Silkin},
journal= {arXiv preprint arXiv:cond-mat/0207281},
year = {2007}
}
Comments
11 pages, 3 figures, to appear in J. Electron Spectrosc