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

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

2007-12-17

arxiv.org/abs/0712.2790v1

Physics

Condensed Matter

Materials Science

4 pages, 4 figures

Scientific paper

10.1103/PhysRevB.77.073409

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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