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Plasmon tsunamis on metallic nanoclusters.

A A Lucas¹, M Sunjic

¹Donostia International Physics Center, Paseo Manuel Lardizabal 4, 20018 Donostia-San Sebastian, Spain. amand.lucas@fundp.ac.be

Journal of Physics. Condensed Matter : an Institute of Physics Journal

|February 23, 2012

Summary

Highly charged ions capturing electrons from metallic nanospheres trigger a "tsunami-like" energy transfer, causing surface plasmon excitation and observable oscillations in ion kinetic energy gain spectra.

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Area of Science:

Atomic and Molecular Physics
Plasmonics
Surface Science

Background:

Electron capture by highly charged ions is a fundamental process.
Interactions between ions and metallic nanostructures can lead to unique phenomena.
Surface plasmons play a crucial role in energy transfer at the nanoscale.

Purpose of the Study:

To model inelastic scattering events during electron capture by highly charged ions near metallic nanospheres.
To analyze the contribution of multipolar surface plasmons to ion kinetic energy gain.
To extend previous theoretical treatments of ion-molecule charge exchange systems.

Main Methods:

Development of a theoretical model for inelastic scattering and electron capture.
Analysis of energy transfer from the Fermi level to ion Rydberg states.

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Simulation of surface plasmon excitation and kinetic energy gain spectra.

Main Results:

A tsunami-like energy transfer phenomenon is described, leading to periodic oscillations in the ion kinetic energy gain spectrum.
Individual multipolar surface plasmons are shown to contribute significantly to the oscillatory gain spectrum.
Simulations for Ar(15+) ions interacting with Al and Na nanoclusters exhibit characteristic oscillations.

Conclusions:

The developed model accurately describes the complex interplay between electron capture, surface plasmon excitation, and ion kinetic energy gain.
The tsunami-like phenomenon provides a new perspective on ion-nanoparticle interactions.
The findings have implications for understanding charge exchange processes in nanoscale systems.