Issue 3, 2023

Visualizing screening in noble-metal clusters: static vs. dynamic

Abstract

The localized surface-plasmon resonance of metal nanoparticles and clusters corresponds to a collective charge oscillation of the quasi-free metal electrons. The polarization of the more localized d electrons opposes the overall polarization of the electron cloud and thus screens the surface plasmon. By contrast, a static electric external field is well screened, as even very small noble-metal clusters are highly metallic: the field inside is practically zero except for the effect of the Friedel-oscillation-like modulations which lead to small values of the polarization of the d electrons. In the present article, we present and compare representations of the induced densities (i) connected to the surface-plasmon resonance and (ii) resulting from an external static electric field. The two cases allow for an intuitive understanding of the differences between the dynamic and the static screening.

Graphical abstract: Visualizing screening in noble-metal clusters: static vs. dynamic

Supplementary files

Article information

Article type
Paper
Submitted
15 sen 2022
Accepted
06 dek 2022
First published
10 dek 2022
This article is Open Access
Creative Commons BY-NC license

Phys. Chem. Chem. Phys., 2023,25, 2075-2083

Visualizing screening in noble-metal clusters: static vs. dynamic

R. Sinha-Roy, P. García-González, X. López-Lozano and H. Weissker, Phys. Chem. Chem. Phys., 2023, 25, 2075 DOI: 10.1039/D2CP04316E

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