Abstract
The grand partition function for the two-dimensional, two-component plasma at Γ=2 is evaluated exactly in a finite system for various interfaces: a charged hard wall (the so-called primitive electrode model), a second two-component plasma of different fugacity separated by an impermeable membrane (the ideally polarizable interface), and a metal wall separated by an impermeable barrier. For each of these models the surface tension is calculated directly from the asymptotic expansion of the grand partition function.
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Forrester, P.J. Surface tension for the two-component plasma at Γ=2 near an interface. J Stat Phys 67, 433–448 (1992). https://doi.org/10.1007/BF01049715
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DOI: https://doi.org/10.1007/BF01049715