Issue 5, 2021

Electron dynamics in plasmons

Abstract

The Particle-in-Cell (PIC) method for plasmons provides a mechanical, single-particle picture of plasmon resonances by tracking in time the movement of all the individual conduction electrons. By applying it to gold nanorods, we demonstrate the usefulness of PIC for extracting time-domain information of plasmons such as plasmon decay times, the relative contribution of each plasmon damping channel, detailed electron movement, as well as radiation and hot electron-emission during damping. An analysis of the time-resolved velocity distribution of the conduction electrons shows that only a small offset in this distribution in each cycle constitutes the plasmon oscillation. We show how PIC can be used to separately analyse Landau damping and Drude damping, and how their decay times can be calculated. Electron–electron scattering and surface scattering are both shown to gradually increase the overall kinetic energy of the electrons and decrease their coherence.

Graphical abstract: Electron dynamics in plasmons

Supplementary files

Article information

Article type
Communication
Submitted
30 Sep 2020
Accepted
12 Jan 2021
First published
12 Jan 2021

Nanoscale, 2021,13, 2801-2810

Electron dynamics in plasmons

H. T. B. Do, D. Wen Jun, Z. Mahfoud, W. Lin and M. Bosman, Nanoscale, 2021, 13, 2801 DOI: 10.1039/D0NR07025D

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements