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This paper investigates the surface state behaviour in a one-dimensionally disordered system, the H/Ni(110) missing/added row reconstructed surface. It is shown that the absence of a dispersion is a necessary but not in all cases a sufficient criterion for the localisation of an electronic state. The quenching behaviour of surface states is, therefore, used to investigate their dimensionality. Inverse photoemission shows an unoccupied surface state, with the wave vector perpendicular to the rows being completely quenched due to the one-dimensional disorder. In contrast, an unoccupied surface state propagating along the rows is not attenuated at all. This indicates that the latter is a one-dimensional chain state, localised to individual atom rows.

Additional information

Authors: BISCHLER U, Max-Planck-Institut für Plasmaphysik, Garching bei München (DE);BERTEL E, Max-Planck-Institut für Plasmaphysik, Garching bei München (DE)
Bibliographic Reference: Article: Physical Review Letters, Vol. 71 (1993) No. 14, pp. 2296-2299
Record Number: 199311663 / Last updated on: 1994-11-28
Original language: en
Available languages: en
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