Photoemission from surface-localized structures on vicinal surfaces: Initial- or final-state superlattice effect?

AM Shikin, A Varykhalov, Serguei Gorovikov, GV Prudnikova, VK Adamchuk, KH Rieder, W Gudat, O Rader

Research output: Contribution to journalArticlepeer-review

2 Citations (SciVal)

Abstract

Strong superlattice effects are reported on E(k(vertical bar vertical bar)) band dispersions measured by angle-resolved photoemission on W(3 3 1) and W(5 5 1), and graphene nanostripes on Ni(7 7 1). A splitting of the dispersions with reciprocal superlattice vector G = 2 pi/L is observed for a surface resonance on W(3 3 1) and W(5 5 1) and for pi-states of graphene/Ni(7 7 1). Photon-energy-dependent measurements and comparison to LEED show that electrons are confined to the one-dimensional terraces and stripes, respectively, and that the observed superlattice effects are due to diffraction in the final state of the photoemission transitions.
Original languageEnglish
Pages (from-to)625-628
JournalJournal of Electron Spectroscopy and Related Phenomena
Volume144-147
DOIs
Publication statusPublished - 2005

Subject classification (UKÄ)

  • Natural Sciences
  • Physical Sciences

Keywords

  • graphite
  • dispersion
  • final-state effect
  • photoemission
  • diffraction
  • stepped surface
  • tungsten

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