Ordering and growth of Xe films on the 10-fold quasicrystalline approximant Al13 Co4 (100) surface

Xe adsorption on the (100) surface of the complex alloy Al 13Co4 has been carried out using low-energy electron diffraction (LEED) and grand canonical Monte Carlo (GCMC) simulations. This surface is an approximant to the 10-fold surface of decagonal Al-Ni-Co, on which Xe adsorption has been studied previously. The adsorption behavior on the periodic surface is largely similar to that on the quasicrystal (layer-by-layer growth, hexagonal ordering near the onset of the second-layer adsorption), but it also has some differences, such as the complete lack of registry of the Xe layer with the substrate structure in the hexagonal phase, and a high sensitivity of the Xe epitaxial direction to trace impurities. In the simulations, an ordering transition was observed between the low-density and high-density monolayer regimes that involves a uniaxial compression of the monolayer film. © 2011 American Physical Society.

Full Text

Duke Authors

Cited Authors

  • Shin, H; Karimi, M; Setyawan, W; Curtarolo, S; Diehl, RD

Published Date

  • 2011

Published In

Volume / Issue

  • 84 / 11

International Standard Serial Number (ISSN)

  • 1098-0121

Digital Object Identifier (DOI)

  • 10.1103/PhysRevB.84.115454

Citation Source

  • SciVal