Effect of hydrogen on the atomic structure of Pd(001)

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dc.creatorKim, S. H.
dc.creatorBarthel, J.
dc.creatorMeyerheim, H. L.
dc.creatorKirschner, J.
dc.creatorSeo, Jikeun
dc.creatorKim, J. -S.
dc.date2004-11-27
dc.date.accessioned2026-07-07T03:02:22Z
dc.date.available2026-07-07T03:02:22Z
dc.descriptionThe atomic structures of clean and hydrogen-adsorbed Pd(001) are investigated by low energy electron diffraction (LEED) I/V analysis. Clean Pd(001) shows little surface relaxation in sharp contrast to previous reports. Adsorbing 1 monolayer of hydrogen on Pd(001), we observe sizable expansion of the interlayer spacing of the first two surface layers, $d_{12}$ by 4.7% of the corresponding one of bulk Pd. Both experimental observations are in excellent agreement with the predictions of recent {\it ab initio} calculations. A series of experiments with varying coverages of hydrogen adsorbed on Pd(001), reveals that $d_{12}$ monotonically increases with the increasing coverage. Such an observation strongly supports the contention that the previous observation of expanded $d_{12}$ in clean Pd(001) results from contamination of the surface by residual hydrogen.
dc.description6 pages, 5figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0411685
dc.identifierhttp://arxiv.org/abs/cond-mat/0411685
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/25371
dc.subjectOther Condensed Matter
dc.subjectMaterials Science
dc.titleEffect of hydrogen on the atomic structure of Pd(001)
dc.typetext

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