Phys. Rev. Lett. 80, 5105–5108 (1998)Quenching of the Size Effects in Free and Matrix-Embedded Silver ClustersReceived 24 December 1997; published in the issue dated 8 June 1998 The surface plasmon energy of silver clusters is investigated in the framework of the time-dependent local density approximation. The results are in good agreement with experimental data on free AgN+ clusters and on AgN clusters embedded in solid argon and alumina. The size effects are weak and very sensitive to the matrix, the porosity at the interface, and the cluster charge. It is shown that the core-electron contribution to the metal dielectric function is mainly responsible for the quenching of the size effects in the optical response. © 1998 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.80.5105
DOI:
10.1103/PhysRevLett.80.5105
PACS:
36.40.-c, 71.10.-w, 71.45.Gm
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