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Abstract

The interaction of atomic hydrogen with Cu(110) has been investigated by thermal desorption spectroscopy and by surface state spectroscopy using ultraviolet photoemission and inverse photoemission. Atomic H first forms a chemisorption layer, which saturates at a coverage of around 0.5 monolayers. At low temperature further exposure leads to a thermal desorption peak which was not observed hitherto. This can be attributed to H absorption into subsurface sites. The surface state shifts caused by the adsorption of hydrogen on Cu(110) show striking parallels to those observed upon hydrogen adsorption on Ni(110). The (1 x 2) reconstruction of the H/Cu(110) surface gives rise to a surface state shift which is characteristic for a missing or added row phase. The intensity variation of the surface states during the formation of the (1 x 2) phase indicates the formation of large islands. An occupied surface state on H/Cu(110) contributes to the stabilisation of these islands.

Additional information

Authors: SANDL P, Max-Planck-Institut für Plasmaphysik, Garching bei München (DE);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: Surface Science, Vol. 291 (1993) pp. 29-38
Record Number: 199311195 / Last updated on: 1994-11-29
Category: PUBLICATION
Original language: en
Available languages: en