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arxiv 0712.2790 v1 pith:CVJFOGSL submitted 2007-12-17 cond-mat.mtrl-sci

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

classification cond-mat.mtrl-sci
keywords monolayerquasiperiodicstructureelectronicself-assemblyspectroscopyal-pd-mnbeen
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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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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