Application of the matching procedure to the calculation of phonon dispersion on Ni(100) covered with a C(2×2) overlayer

J. Szeftel, A. Khater, F. Mila

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The equations of motion are worked out for the atoms of a semi-infinite crystal covered with a commensurate adsorbate by using the clean crystal as a basis. This procedure produces a complete set of displacement fields consistent with the relevant space-group symmetry. These equations are solved with help of the matching procedure to give the surface even phonon and resonance dispersion curves in the (010) direction of Ni(1OO) covered with a C(2×2) oxygen overlayer. The consequences of the adsorbate induced folding of the Brillouin zone upon the bulk and surface phonons are analysed. Using symmetry adapted coordinates secures a straightforward identification of the loss features observed by EELS.

Original languageEnglish
Pages (from-to)361-372
Number of pages12
JournalJournal of Electron Spectroscopy and Related Phenomena
Volume44
Issue number1
DOIs
Publication statusPublished - 1987
Externally publishedYes

Fingerprint

Adsorbates
Crystals
Electron energy loss spectroscopy
symmetry
Phonons
Brillouin zones
folding
Equations of motion
crystals
equations of motion
phonons
Oxygen
Atoms
oxygen
curves
atoms
Direction compound

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Spectroscopy
  • Atomic and Molecular Physics, and Optics
  • Surfaces and Interfaces

Cite this

Application of the matching procedure to the calculation of phonon dispersion on Ni(100) covered with a C(2×2) overlayer. / Szeftel, J.; Khater, A.; Mila, F.

In: Journal of Electron Spectroscopy and Related Phenomena, Vol. 44, No. 1, 1987, p. 361-372.

Research output: Contribution to journalArticle

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