a Institut für Physikalische Chemie, Universität Innsbruck, Innrain 52a, A-6020, Innsbruck, Austria
b Physikalisches Institut, Universität Münster, Wilhelm-Klemm-Str. 10, D-48149, Münster, Germany
Abstract:
The unoccupied electronic structure of Pt(1 1 0) was investigated by inverse photoemission. The results were compared with the data for Ni(1 1 0) and Pd(1 1 0) with particular emphasis on surface states. The surface states in the
gap of Pt(1 1 0) are shifted upwards relative to Ni and Pd, as a consequence of the (1 × 2) missing-row reconstruction. In contrast, the surface state at
is only weakly affected, which indicates that it is essentially a one-dimensional state, localized on the densely-packed atomic chains on the Pt(1 1 0) surface.