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arXiv · 0712.2790

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

J. Ledieu·L. Leung·L. H. Wearing·R. McGrath·T. A. Lograsso·D. Wu·V. Fournée
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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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J. Ledieu, L. Leung, L. H. Wearing, R. McGrath, T. A. Lograsso, D. Wu, V. Fournée. 2007-12-17. Self-assembly, structure and electronic properties of a quasiperiodic lead monolayer. https://doi.org/10.1103/physrevb.77.073409

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