Abstract

From molecular-dynamics simulation of liquid–liquid interface at low temperatures between two simple liquids, we determine two point correlation functions, also for the liquid–vacuum interface. True Fourier vector in-plane dependence, correlations parallel and perpendicular to the interface, susceptibilities, and surface scattering factor (in the Born approximation) are discussed. The Bhatia–Thornton transformation is generalized to inhomogeneous systems and applied. Effects of capillary waves, surface reconstruction, surface layering, and prominence of bulk structures are found and discussed.

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