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
2008 Physical Review B  
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
more » ... splays a pseudo-gap at the Fermi level which is directly related to its quasiperiodic structure.
doi:10.1103/physrevb.77.073409 fatcat:j64hrot3lzhx5jbrrkzjc7qq2m