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Correction: Ahmed et al. Comparative Carcinogenicity of Double-Walled Carbon Nanotubes of Different Lengths Administered by Intratracheal Installation into Rat Lungs. <i>Nanomaterials</i> 2025, <i>15</i>, 1402.

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Related Experiment Video

Updated: Aug 5, 2025

Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons

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Published on: July 21, 2018

Two-Dimensional Plasmons in Laterally Confined 2D Electron Systems.

Igor V Zagorodnev¹, Andrey A Zabolotnykh¹, Danil A Rodionov^1,2

¹Kotelnikov Institute of Radio-Engineering and Electronics of the RAS, 125009 Moscow, Russia.

Nanomaterials (Basel, Switzerland)

|March 29, 2023

Summary

We explore two-dimensional (2D) plasmons in confined systems, revealing non-trivial damping behaviors and near-gate plasmons controllable by gate geometry. This advances light-matter applications.

Keywords:

Drude model confined magnetoplasmon confinement of gated plasmon near-gate plasmon plasmon polaritons in confined two-dimensional electron systems quantum well two-dimensional plasmon

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Last Updated: Aug 5, 2025

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Area of Science:

Condensed Matter Physics
Solid State Physics
Nanophotonics

Background:

Collective oscillations of charge density, known as plasmons, are fundamental excitations in conductive solids.
Two-dimensional (2D) electron systems exhibit gapless plasmon dispersion from subterahertz to infrared, offering potential for light-matter interactions.

Purpose of the Study:

To investigate the physics of 2D plasmons in confined geometries (stripe and disk).
To analyze the frequency and damping of plasmons in gated 2D electron systems.
To explore the novel behavior of near-gate 2D plasmons without applied bias.

Main Methods:

Analytical description of plasmon frequency and damping using a simplified conductivity approach.
Analysis of gated plasmons in disk geometry at varying distances from a metal gate.
Investigation of plasmon dispersion and spectrum in laterally confined gates (stripe and disk).

Main Results:

Analytical expressions for plasmon frequency and damping are obtained for gated 2D systems.
The damping of disk plasmons exhibits non-trivial, non-monotonic behavior, not simply a sum of radiative and collisional dampings.
Near-gate 2D plasmons were discovered, propagating along confined gates without bias, with controllable frequency and spatial propagation.

Conclusions:

Confined 2D plasmons offer tunable properties for advanced light-matter applications.
Understanding plasmon damping is crucial for maximizing the quality factor of plasma resonances in high-mobility 2D systems.
Near-gate plasmons present a new avenue for controlling plasmonics without external voltage bias.