# Eutectic point in a simple lattice gas model

Source: [Eutectic point in a simple lattice gas model](<https://www.sota2.com/research/paper/68fa1e8b7a2b558e29322fcd>)

Collection index: [llms.txt](<https://www.sota2.com/research/llms.txt>)

Data updated: 2025-10-23T15:16:13.163Z

Authors: M. Sandhoff, H. Pfnuer, H.U. Everts

Published: 1993-07-09T15:42:15.000Z

## Abstract

We investigate the phase diagram and the critical properties of the adsorbate system sulphur/ruthenium(0001) in the coverage region $\\frac{1}{4} \< \\Theta \< \\frac{1}{3}$ by means of Monte-Carlo simulations of a simple lattice gas model on a triangular lattice. The model contains only repulsive nearest and next-nearest neighbor interactions. Combining results obtained by using both Glauber and Kawasaki kinetics in the simulations we identify two tricritical points, three coexistence regions and a eutectic point in the phase diagram of the system. Our results agree with the findings of recent experimental work on S/Ru(0001). Furthermore we are able to add certain details to the experimentally observed phase diagram.

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## Original sources and implementation

[Original paper](<https://arxiv.org/abs/cond-mat/9307015>)

[PDF](<https://arxiv.org/pdf/cond-mat/9307015.pdf>)