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Self-assembly, structure and electronic properties of a quasiperiodic lead monolayer

Authors
  • Ledieu, J.
  • Leung, L.
  • Wearing, L. H.
  • McGrath, R.
  • Lograsso, T. A.
  • Wu, D.
  • Fournée, V.
Type
Preprint
Publication Date
Dec 17, 2007
Submission Date
Dec 17, 2007
Identifiers
DOI: 10.1103/PhysRevB.77.073409
Source
arXiv
License
Unknown
External links

Abstract

A quasiperiodic Pb monolayer has been formed on the five-fold surface of the Al-Pd-Mn quasicrystal. Growth of the monolayer proceeds via self-assembly of an interconnected network of pentagonal Pb stars, which are shown to be tau-inflated compared to similar structural elements of the quasiperiodic substrate. Measurements of the electronic structure of the system using scanning tunnelling spectroscopy and ultra-violet photoemission spectroscopy reveal that the Pb monolayer displays a pseudo-gap at the Fermi level which is directly related to its quasiperiodic structure.

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