Remnants of the devil's staircase of phase transitions in the model of dimer adsorption at nonzero temperature

The model of dimers adsorption on hexagonal lattice with different orientations to surface and hard-spheres lateral interactions has been studied at nonzero temperature. The transfer-matrix method was used as the main one and the Monte Carlo method was used for checking of some extreme cases. Adsorp...

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Bibliographic Details
Published in:Physical review. B 2018-02, Vol.97 (8), Article 085408
Main Authors: Akimenko, S. S., Fefelov, V. F., Myshlyavtsev, A. V., Stishenko, P. V.
Format: Article
Language:English
Subjects:
Adsorption
Computer simulation
Dimers
Hexagonal lattice
Monte Carlo simulation
Phase transitions
Temperature
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Summary:The model of dimers adsorption on hexagonal lattice with different orientations to surface and hard-spheres lateral interactions has been studied at nonzero temperature. The transfer-matrix method was used as the main one and the Monte Carlo method was used for checking of some extreme cases. Adsorption isotherms, dependencies of the entropy from the density of the adsorption layer and of the energy from the system temperature at certain points of the phase space, were computed. It was found that at least the first ten phases of the ground state still persist at nonzero temperatures.
ISSN:2469-9950
2469-9969
DOI:10.1103/PhysRevB.97.085408