Calculation of the spectral densities of the surface alloy system (PtcCu1 - c1 Cu(100)

H. Grimech, A. Khater

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

A formalism for calculating the mean spectral densities of the disordered surface alloy system (PtcCu1 - c)1 Cu(100), is presented, using simultaneously the matching and the Green functions methods. The surface vibrational dynamics are developed using an effective field approach that goes in principle beyond the mean field approximation. Describing the surface layer (PtcCu1 - c) by a random distribution of Pt and Cu atoms, we present numerical results for surface spectral densities, and surface mean-square displacements in this system, as a function of the defect concentration c (0 ≤ c ≤ 1).

Original languageEnglish
Pages (from-to)198-206
Number of pages9
JournalSurface Science
Volume323
Issue number3
DOIs
Publication statusPublished - 20 Jan 1995
Externally publishedYes

Fingerprint

Spectral density
statistical distributions
surface layers
Green's functions
Green's function
formalism
defects
Atoms
approximation
Defects
atoms

ASJC Scopus subject areas

  • Materials Chemistry
  • Surfaces, Coatings and Films
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Physical and Theoretical Chemistry

Cite this

Calculation of the spectral densities of the surface alloy system (PtcCu1 - c1 Cu(100). / Grimech, H.; Khater, A.

In: Surface Science, Vol. 323, No. 3, 20.01.1995, p. 198-206.

Research output: Contribution to journalArticle

Grimech, H. ; Khater, A. / Calculation of the spectral densities of the surface alloy system (PtcCu1 - c1 Cu(100). In: Surface Science. 1995 ; Vol. 323, No. 3. pp. 198-206.
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