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.
@article{arxiv.0712.2790,
title = {Self-assembly, structure and electronic properties of a quasiperiodic lead monolayer},
author = {J. Ledieu and L. Leung and L. H. Wearing and R. McGrath and T. A. Lograsso and D. Wu and V. Fournée},
journal= {arXiv preprint arXiv:0712.2790},
year = {2009}
}