Plasmonic Edge, Centre and Breathing Modes in Two-Dimensional Disks

Recently, plasmonic edge and breathing modes are obtained by electron energy loss spectroscopy in aluminum nanotriangles and silver nanodisks. In this article, based on the free-electron gas model and the linear response theory, we have derived the energy absorption spectrum and charge distributions...

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Bibliographic Details
Published inPlasmonics (Norwell, Mass.) Vol. 16; no. 2; pp. 471 - 476
Main Authors Xue, Hong-jie, Jin, Fa-cheng, Wei, Li-Min, Wang, Xiao-mei, Hao, Da-peng
Format Journal Article
LanguageEnglish
Published New York Springer US 01.04.2021
Springer Nature B.V
Subjects
Absorption spectra
Aluminum
Biochemistry
Biological and Medical Physics
Biophysics
Biotechnology
Chemistry
Chemistry and Materials Science
Disks
Electron energy loss spectroscopy
Electron gas
Energy absorption
Energy dissipation
Free electrons
Nanotechnology
Plasmonics
Plasmons
Spectrum analysis
The linear response theory
Charge distributions
The free-electron gas model
The energy absorption spectrum
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Summary:Recently, plasmonic edge and breathing modes are obtained by electron energy loss spectroscopy in aluminum nanotriangles and silver nanodisks. In this article, based on the free-electron gas model and the linear response theory, we have derived the energy absorption spectrum and charge distributions under applied external fields to study the plasmons sustained by two-dimensional disks. Plasmonic edge, center and breathing modes are further observed by the charge distributions. In addition, with the help of energy absorption spectrum, the evolutionary characteristics of plasmon modes with the system parameters such as size, atomic separation and electron filling are further confirmed, and the effect of different applied external fields on plasmon excitations is displayed.
ISSN:1557-1955
1557-1963
DOI:10.1007/s11468-020-01306-4