A novel approach for the calculation of localized vibrational surface states on the tip of an isolated linear atomic chain extending from the surface boundary into the bulk of two dimensional systems

Y. Pennec, O. Rafil, A. Khater

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

A two dimensional system consisting of a half-infinite linear chain of A atoms wedged between two quarter-infinite square lattices of B atoms is considered. We present a novel approach for the calculation of the localized vibrational states on the extremity of the chain A at the boundary, as a function of the system force constants. The chain, regarded as an isolated inhomogeneity extending from the boundary into the bulk of the system, together with the surface boundary, break the symmetry in two dimensions. The matching method is generalized in two dimensions in order to treat the evanescent vibrational states of this system.

Original languageEnglish
Pages (from-to)777-782
Number of pages6
JournalJournal of Electron Spectroscopy and Related Phenomena
Volume64-65
Issue numberC
DOIs
Publication statusPublished - 12 Dec 1993
Externally publishedYes

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Surface states
vibrational states
Atoms
atoms
inhomogeneity
symmetry

ASJC Scopus subject areas

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

Cite this

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AB - A two dimensional system consisting of a half-infinite linear chain of A atoms wedged between two quarter-infinite square lattices of B atoms is considered. We present a novel approach for the calculation of the localized vibrational states on the extremity of the chain A at the boundary, as a function of the system force constants. The chain, regarded as an isolated inhomogeneity extending from the boundary into the bulk of the system, together with the surface boundary, break the symmetry in two dimensions. The matching method is generalized in two dimensions in order to treat the evanescent vibrational states of this system.

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