Abstract

Interactions contributing to the lateral energy of a xenon monolayer are evaluated. Thermodynamic properties of the monolayer are derived from a statistical mechanical treatment of a realistic model of the interactions. At low temperatures the quasiharmonic theory of lattice dynamics is used; at intermediate temperatures the cell model approximation is used. The thermal expansion of the unconstrained two-dimensional solid, the lateral compressibility, and lateral energy contributions to the isosteric heat are evaluated; the results agree well with recent experimental data. Two-dimensional second virial coefficients are also evaluated.

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