Phase transition at finite temperature in one dimension: Adsorbate ordering in Ba/Si(111)3x2
Materials Science
2009-11-11 v1 Statistical Mechanics
Abstract
We demonstrate that the Ba-induced Si(111)3x2 reconstruction is a physical realization of a one-dimensional antiferromagnetic Ising model with long-range Coulomb interactions. Monte Carlo simulations performed on a corresponding Coulomb-gas model, which we construct based on density-functional calculations, reveal an adsorbate-ordering phase transition at finite temperature. We show numerically that this unusual one-dimensional phase transition should be detectable by low-energy electron diffraction.
Keywords
Cite
@article{arxiv.cond-mat/0504441,
title = {Phase transition at finite temperature in one dimension: Adsorbate ordering in Ba/Si(111)3x2},
author = {Steven C. Erwin and C. Stephen Hellberg},
journal= {arXiv preprint arXiv:cond-mat/0504441},
year = {2009}
}
Comments
11 pages + 4 figures. Surf. Sci. Lett. (in press)