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arXiv · cond-mat/9805172

Corrugation-Induced First-Order Wetting: An Effective Hamiltonian Study

P. S. Swain·A. O. Parry
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Abstract

We consider an effective Hamiltonian description of critical wetting transitions in systems with short-range forces at a corrugated (periodic) wall. We are able to recover the results obtained previously from a `microscopic' density-functional approach in which the system wets in a discontinuous manner when the amplitude of the corrugations reaches a critical size A*. Using the functional renormalization group, we find that A* becomes dependent on the wetting parameter ωin such a way as to decrease the extent of the first-order regime. Nevertheless, we still expect wetting in the Ising model to proceed in a discontinuous manner for small deviations of the wall from the plane.

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P. S. Swain, A. O. Parry. 1998-05-14. Corrugation-Induced First-Order Wetting: An Effective Hamiltonian Study. https://doi.org/10.1007/s100510050403

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