Supershells in Metal Clusters: Self-Consistent Calculations and Their Semiclassical Interpretation

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Abstract
To understand the electronic shell and supershell structure in large metal clusters we have performed self-consistent calculations in the homogeneous, spherical jellium model for a variety of different materials. A scaling analysis of the results reveals a surprisingly simple dependence of the supershells on the jellium density. It is shown how this can be understood in the framework of a periodic-orbit expansion by analytically extending the well-known semiclassical treatment of a spherical cavity to more realistic potentials.
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