Surface properties of semi-infinite Fermi systems |
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| Authors: | X Campi S Stringari |
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| Institution: | Division de Physique Théorique, Institut de Physique Nucléaire, F-91406 Orsay Cedex, France |
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| Abstract: | A functional relation between the kinetic-energy density and the total density is used to analyze the surface properties of semi-infinite Fermi systems. We find an explicit expression for the surface thickness in which the role of the infinite matter compressibility, binding energy and non-locality effects is clearly shown. The method, which holds both for nuclear and electronic systems (liquid metals), yields a very simple relation between the surface thickness and the surface energy. |
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