Document Type

Article

Publication Date

4-29-2009

Journal or Book Title

Physical Review B

Volume

79

Issue

13

First Page

134206

DOI

10.1103/PhysRevB.79.134206

Abstract

Using electron diffraction, we show that free-electron metals, such as sodium and potassium, form a highly regular quasiperiodic monolayer on the fivefold surface of icosahedral Al-Pd-Mn and that the quasiperiodicity propagates up to the second layer in sodium. Our photoelectron spectroscopy results show that the quasicrystalline alkali-metal adlayer does not exhibit a pseudogap near the Fermi level thought to be characteristic for the electronic structure of quasicrystalline materials. Calculations based on density functional theory provide a model structure for the quasicrystalline alkali-metal monolayer and confirm the absence of a pseudogap.

Comments

This article is from Physical Review B 79 (2009): 134206, doi:10.1103/PhysRevB.79.134206.

Copyright Owner

American Physical Society

Language

en

File Format

application/pdf

Included in

Metallurgy Commons

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