Static Dipole Polarizability of Alkali-Metal Clusters: Electronic Exchange and Correlation Effects

Physical Review B 42, 10950 - 10964 (1990)

Static Dipole Polarizability of Alkali-Metal Clusters: Electronic Exchange and Correlation Effects

A. Rubio, L.C Balbás, Ll. Serra, M. Barranco

Nonlocal approximations for the electronic exchange and correlation effects are used to compute, within density-functional theory, the polarizability and surface-plasma frequencies of small jelliumlike alkali-metal clusters. The results are compared with those obtained using the local-density approximation and with available experimental data, showing the relevance of these effects in obtaining an accurate description of the surface response of metallic clusters.

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http://dx.doi.org/10.1103/PhysRevB.42.10950