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Plasmonic Resonant Intercluster Coulombic Decay.

Rasheed Shaik1, Hari R Varma1, Mohamed El-Amine Madjet2,3

  • 1School of Physical Sciences, Indian Institute of Technology Mandi, Kamand, H.P. 175075, India.

Physical Review Letters
|June 24, 2023
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Summary
This summary is machine-generated.

Researchers explored energy transfer between nanoclusters using plasmon excitations. They found resonant intercluster Coulombic decay (RICD) enables nonlocal energy sharing, controllable via photoelectron velocity map imaging.

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Area of Science:

  • * Nanophotonics and Plasmonics
  • * Quantum Chemistry and Atomic Physics
  • * Materials Science

Background:

  • * Light-induced energy confinement in nanoclusters via plasmon excitations is crucial for applications in nanophotonics, photocatalysis, and electron sources.
  • * The decay of plasmon excitations into the ionization continuum offers insights into collective electronic behavior.
  • * Nonlocal energy sharing between conjugated nanoclusters could enable controlled remote collective events.

Purpose of the Study:

  • * To investigate the possibility of transferring plasmon decay amplitude to a second conjugated cluster.
  • * To demonstrate nonlocal energy sharing between plasmonic nanoclusters.
  • * To identify a fundamental process responsible for this intercluster energy transfer.

Main Methods:

  • * Theoretical modeling of a spherically nested dimer nanocluster (Na_{20}@C_{240}).
  • * Analysis of plasmon excitations and their decay pathways.
  • * Simulation of resonant intercluster Coulombic decay (RICD).
  • * Consideration of experimental detection via photoelectron velocity map imaging.

Main Results:

  • * Demonstrated that energy transfer between conjugated nanoclusters is possible.
  • * Identified resonant intercluster Coulombic decay (RICD) as the fundamental process enabling this transfer.
  • * Showed that the plasmonic RICD signal is experimentally detectable.

Conclusions:

  • * Resonant intercluster Coulombic decay (RICD) facilitates nonlocal energy sharing in plasmonic nanocluster systems.
  • * This nonlocal energy transfer mechanism offers potential for controlling remote collective electronic events.
  • * Photoelectron velocity map imaging is a viable technique for detecting plasmonic RICD.