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Title: Surface plasmon polaritons in a semi-bounded degenerate plasma: Role of spatial dispersion and collisions

Abstract

Surface plasmon polaritons (SPPs) in a semi-bounded degenerate plasma (e.g., a metal) are studied using the quasiclassical mean-field kinetic model, taking into account the spatial dispersion of the plasma (due to quantum degeneracy of electrons) and electron-ion (electron-lattice, for metals) collisions. SPP dispersion and damping are obtained in both retarded ({omega}/k{sub z}{approx}c) and non-retarded ({omega}/k{sub z} Much-Less-Than c) regions, as well as in between. It is shown that the plasma spatial dispersion significantly affects the properties of SPPs, especially at short wavelengths (less than the collisionless skin depth, {lambda} Less-Than-Or-Equivalent-To c/{omega}{sub pe}). Namely, the collisionless (Landau) damping of SPPs (due to spatial dispersion) is comparable to the purely collisional (Ohmic) damping (due to electron-lattice collisions) in a wide range of SPP wavelengths, e.g., from {lambda}{approx}20 nm to {lambda}{approx}0.8 nm for SPP in gold at T = 293 K and from {lambda}{approx}400 nm to {lambda}{approx}0.7 nm for SPPs in gold at T = 100 K. The spatial dispersion is also shown to affect, in a qualitative way, the dispersion of SPPs at short wavelengths {lambda} Less-Than-Or-Equivalent-To c/{omega}{sub pe}.

Authors:
;  [1];  [1];  [2]
  1. School of Physics, University of Sydney, NSW 2006 (Australia)
  2. (Russian Federation)
Publication Date:
OSTI Identifier:
22068872
Resource Type:
Journal Article
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 19; Journal Issue: 11; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1070-664X
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; DISPERSIONS; ELECTRON-ION COLLISIONS; ELECTRONS; GOLD; LANDAU DAMPING; MEAN-FIELD THEORY; PLASMA; PLASMONS; POLARONS; SURFACES; WAVELENGTHS

Citation Formats

Tyshetskiy, Yu., Kompaneets, R., Vladimirov, S. V., and Metamaterials Laboratory, National Research University of Information Technology, Mechanics, and Optics, St. Petersburg 199034. Surface plasmon polaritons in a semi-bounded degenerate plasma: Role of spatial dispersion and collisions. United States: N. p., 2012. Web. doi:10.1063/1.4764468.
Tyshetskiy, Yu., Kompaneets, R., Vladimirov, S. V., & Metamaterials Laboratory, National Research University of Information Technology, Mechanics, and Optics, St. Petersburg 199034. Surface plasmon polaritons in a semi-bounded degenerate plasma: Role of spatial dispersion and collisions. United States. doi:10.1063/1.4764468.
Tyshetskiy, Yu., Kompaneets, R., Vladimirov, S. V., and Metamaterials Laboratory, National Research University of Information Technology, Mechanics, and Optics, St. Petersburg 199034. Thu . "Surface plasmon polaritons in a semi-bounded degenerate plasma: Role of spatial dispersion and collisions". United States. doi:10.1063/1.4764468.
@article{osti_22068872,
title = {Surface plasmon polaritons in a semi-bounded degenerate plasma: Role of spatial dispersion and collisions},
author = {Tyshetskiy, Yu. and Kompaneets, R. and Vladimirov, S. V. and Metamaterials Laboratory, National Research University of Information Technology, Mechanics, and Optics, St. Petersburg 199034},
abstractNote = {Surface plasmon polaritons (SPPs) in a semi-bounded degenerate plasma (e.g., a metal) are studied using the quasiclassical mean-field kinetic model, taking into account the spatial dispersion of the plasma (due to quantum degeneracy of electrons) and electron-ion (electron-lattice, for metals) collisions. SPP dispersion and damping are obtained in both retarded ({omega}/k{sub z}{approx}c) and non-retarded ({omega}/k{sub z} Much-Less-Than c) regions, as well as in between. It is shown that the plasma spatial dispersion significantly affects the properties of SPPs, especially at short wavelengths (less than the collisionless skin depth, {lambda} Less-Than-Or-Equivalent-To c/{omega}{sub pe}). Namely, the collisionless (Landau) damping of SPPs (due to spatial dispersion) is comparable to the purely collisional (Ohmic) damping (due to electron-lattice collisions) in a wide range of SPP wavelengths, e.g., from {lambda}{approx}20 nm to {lambda}{approx}0.8 nm for SPP in gold at T = 293 K and from {lambda}{approx}400 nm to {lambda}{approx}0.7 nm for SPPs in gold at T = 100 K. The spatial dispersion is also shown to affect, in a qualitative way, the dispersion of SPPs at short wavelengths {lambda} Less-Than-Or-Equivalent-To c/{omega}{sub pe}.},
doi = {10.1063/1.4764468},
journal = {Physics of Plasmas},
issn = {1070-664X},
number = 11,
volume = 19,
place = {United States},
year = {2012},
month = {11}
}