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Theory of electronic excitations in coated metal particles: Jellium-on-jellium model

1986; American Physical Society; Volume: 34; Issue: 2 Linguagem: Inglês

10.1103/physrevb.34.526

1095-3795

W. Ekardt,

Surface and Thin Film Phenomena

Electronic excitations in coated metal particles are investigated within the framework of a self-consistent spherical jellium-on-jellium model (the spherical analog to Lang's chemisorption model for flat surfaces). With use of the calculated single-electron potential in the ground state, the time-dependent local-density approximation is applied to study the existence of a variety of collective modes such as surface modes, interface modes, and overlayer-volume modes. The results are compared with the Eguiluz's work, which used the same model to study collective motion in flat metallic overlayers.