Electronic band structures of low-dimensional adsorbate systems: Rare-gas adsorption on transition metals

Authors
Citation
W. Widdra, Electronic band structures of low-dimensional adsorbate systems: Rare-gas adsorption on transition metals, APPL PHYS A, 72(4), 2001, pp. 395-404
Citations number
29
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
ISSN journal
09478396 → ACNP
Volume
72
Issue
4
Year of publication
2001
Pages
395 - 404
Database
ISI
SICI code
0947-8396(200104)72:4<395:EBSOLA>2.0.ZU;2-9
Abstract
Angle-resolved photoemission data are discussed for five different Xe adlay ers which exhibit electronic structures of different dimensionalities. Xe a dsorption on Ni(110)-(1 x 2)-3H and the (root3 x root3) R30 degrees Xe laye r on Ru (001) reveal two-dimensional (2D) Xe-derived band structures that a re characteristic for hexagonal rare-gas layers. Different Xe 5p dispersion widths on Ni and on Ru are found due to the difference in the Xe-Xe neares t-neighbor distance. For three rare-gas systems (two different Xe coverages on hydrogen-modified Pt(110)-(1 x 2)-H and Kr step decoration on a Pt(997) surface) true one-dimensional (1D) band structures are found. For Xe step adsorption on Pt (997), electronic localized (OD) behavior is observed due to an enlarged Xe-Xe separation. The qualitative differences of the band st ructures in the case of 2D, 1D and OD rare-gas systems are demonstrated and are explained by the different dimensionalities of the various structures.