Pinning of a rough interface by an external potential |
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Authors: | J.M.J. van Leeuwen H.J. Hilhorst |
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Affiliation: | Laboratorium voor Technische Natuurkunde, Postbus 5046, 2600 GA Delft, The Netherlands |
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Abstract: | An analysis is given of the behavior of an interface between two phases in the presence of an external pinning potential in the solid-on-solid limit of the two-dimensional Ising model. It is found that the potential turns a rough interface into a smooth one, except in the case of a boundary potential, where a minimum potential strength is required. The connection with the roughening transition found by Abraham is discussed. The interface width is calculated as a function of the potential parameters in the limit of a weak pining potential. |
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