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

doi:10.1016/j.elspec.2005.01.027

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

MAX IV Laboratory

Research output: Contribution to journal › Article › peer-review

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 language	English
Pages (from-to)	625-628
Journal	Journal of Electron Spectroscopy and Related Phenomena
Volume	144-147
DOIs	https://doi.org/10.1016/j.elspec.2005.01.027
Publication status	Published - 2005

Subject classification (UKÄ)

Natural Sciences
Physical Sciences

Free keywords

graphite
dispersion
final-state effect
photoemission
diffraction
stepped surface
tungsten

Access to Document

10.1016/j.elspec.2005.01.027

Cite this

@article{02ede0fc5e9b4050b5a1e37ac3fefd6b,

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

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.",

keywords = "graphite, dispersion, final-state effect, photoemission, diffraction, stepped surface, tungsten",

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

year = "2005",

doi = "10.1016/j.elspec.2005.01.027",

language = "English",

volume = "144-147",

pages = "625--628",

journal = "Journal of Electron Spectroscopy and Related Phenomena",