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Oscillatory relaxation of Al(110) reinvestigated by using medium-energy ion scattering

Authors
Journal
Surface Science
0039-6028
Publisher
Elsevier
Publication Date
Volume
415
Issue
3
Identifiers
DOI: 10.1016/s0039-6028(98)00620-7
Keywords
  • Aluminum
  • Low-Index Single-Crystal Surfaces
  • Medium-Energy Ion Scattering (Meis)
  • Surface Relaxation And Reconstruction

Abstract

Abstract Medium-energy ion scattering (MEIS) has been used to investigate the room-temperature structure of clean Al(110). The motivation for this work was the presence of a significant discrepancy between two previous independent low-energy electron diffraction results concerning the sign of the third-to-fourth layer relaxation. We find a damped oscillatory contraction–expansion for the first three interlayer spacings. The relaxation results are (in percent change from the bulk interlayer spacing): Δ d 12=−8.5±1.0%, Δ d 23=+4.8±1.2% and Δ d 34=−3.9±1.4%. These results are compared with other theoretical and experimental values.

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