Xe films on a decagonal Al-Ni-Co quasicrystal surface

Details Xe films on a decagonal Al-Ni-Co quasicrystal surface Xe films on a decagonal Al-Ni-Co quasicrystal surface

2006-08-08

arxiv.org/abs/cond-mat/0608201v1

Physics

Condensed Matter

Soft Condensed Matter

6 pages, 5 pics

Scientific paper

10.1103/PhysRevB.74.125425

The grand canonical Monte Carlo method is employed to study the adsorption of Xe on a quasicrystalline Al-Ni-Co surface. The calculation uses a semiempirical gas-surface interaction, based on conventional combining rules and the usual Lennard-Jones Xe-Xe interaction. The resulting adsorption isotherms and calculated structures are consistent with the results of LEED experimental data. In this paper we focus on five features not discussed earlier (Phys. Rev. Lett. 95, 136104 (2005)): the range of the average density of the adsorbate, the order of the transition, the orientational degeneracy of the ground state, the isosteric heat of adsorption of the system, and the effect of the vertical cell dimension.

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