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Unoccupied surface states on the (111) surface of silver: Evidence for broadening

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Zeitschrift für Physik B Condensed Matter

Abstract

We have studied Ag(111) withk-resolved inverse photoemission spectroscopy athv=9.7 eV. In normal incidence we find image-state emission atE vac−(0.4±0.1) eV and the unoccupied part of an intrinsic surface-state band as a huge emission peak cut byE F. The energy dispersion of the intrinsic surface-state band and in particular its crossing ofE F predicted by Ho et al. cannot be observed because of broadening effects as is shown by a theoretical simulation. The broadening is due to the vicinity of the surface state to the bulk continuum nearE F as suggested by Kevan.

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Authors and Affiliations

  1. IBM Zurich Research Laboratory, CH-8803, Rüschlikon, Switzerland

    B. Reihl & K. H. Frank

  2. Physikalisches Institut III, Universität Düsseldorf, Universitätsstrasse 1, D-4000, Düsseldorf 1, Federal Republic of Germany

    A. Otto

Authors
  1. B. Reihl
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  2. K. H. Frank
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  3. A. Otto
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Reihl, B., Frank, K.H. & Otto, A. Unoccupied surface states on the (111) surface of silver: Evidence for broadening. Z. Physik B - Condensed Matter 62, 473–476 (1986). https://doi.org/10.1007/BF01303579

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  • DOI: https://doi.org/10.1007/BF01303579

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