A distinctive feature of the surface structure of quasicrystals: Intrinsic and extrinsic heterogeneity

Patricia A. Thiel, Baríş Ünal, Cynthia J. Jenks, Alan I. Goldman, Paul C. Canfield, Thomas A. Lograsso, James W. Evans, Marianne Quiquandon, Denis Gratias, Michel A. Van Hove

Research output: Contribution to journalReview articlepeer-review

8 Scopus citations

Abstract

This paper reviews a feature of atomically-clean quasicrystal surfaces that distinguishes them from surfaces of crystalline materials. That feature is a high degree of heterogeneity among different terraces, and among structurally-identical adsorption sites. The heterogeneity can be both structural and chemical in origin. A large variability is expected even for a surface which is perfectly bulk-terminated, and we call this intrinsic heterogeneity. Additional variability can derive from the surface preparation process, which can yield metastable structures. We call this extrinsic heterogeneity. Experimental evidence is given for both cases. This heterogeneity can be an important factor in understanding and predicting surface phenomena such as chemisorption.

Original languageEnglish
Pages (from-to)1326-1339
Number of pages14
JournalIsrael Journal of Chemistry
Volume51
Issue number11-12
DOIs
StatePublished - Dec 2011
Externally publishedYes

Funding

Keywords

  • adsorption
  • quasicrystal
  • scanning probe microscopy
  • surface structure

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