Phys. Rev. Lett. 93, 146802 (2004) [4 pages]Photoemission from Stepped W(110): Initial or Final State Effect?Received 9 March 2004; published 29 September 2004 The electronic structure of the (110)-oriented terraces of stepped W(331) and W(551) is compared to the one of flat W(110) using angle-resolved photoemission. We identify a surface-localized state which develops perpendicular to the steps into a repeated band structure with the periodicity of the step superlattices. It is shown that a final-state diffraction process rather than an initial-state superlattice effect is the origin of the observed behavior and why it does not affect the entire band structure. © 2004 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.93.146802
DOI:
10.1103/PhysRevLett.93.146802
PACS:
73.20.At, 79.60.Bm
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