Abstract
We present a spherical symmetry model, containing explicitly nonlocal effects in the electron-ion interaction, to describe the electronic properties of lithium clusters. We assume either an optimized discrete ionic structure or a jellium structure. The model provides the nonlocal potential from which the random phase approximation with exact exchange is applied to calculate the optical response of Li clusters. The optical response of Li +139 obtained within this model is in good agreement with the measured giant dipole resonance. The same model is used to predict alkali-metal effective masses; the agreement with band structure calculations is emphasized.
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Blundell, S.A., Guet, C. Nonlocal ion potential effects on the optical response of lithium clusters. Z Phys D - Atoms, Molecules and Clusters 33, 153–161 (1995). https://doi.org/10.1007/BF01437434
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DOI: https://doi.org/10.1007/BF01437434