Experimental evidence of nanometer-scale confinement of plasmonic eigenmodes responsible for hot spots in random metallic films

Abstract : We report on the identification and nanometer scale characterization over a large energy range of random, disorder-driven, surface plasmons in silver semicontinuous films embedded in silicon nitride. By performing spatially resolved electron energy loss spectroscopy experiments, we experimentally demonstrate that these plasmons eigenmodes arise when the films become fractal, leading to the emergence of strong electrical fields (" hot spots ") localized over few nanometers. We show that disorder-driven surface plasmons strongly depart from those usually found in nanoparticles, being strongly confined and randomly and densely distributed in space and energy. Beyond that, we show that they have no obvious relation with the local morphology of the films, in stark contrast with surface plasmon eigenmodes of nanoparticles.
Type de document :
Article dans une revue
Physical Review B : Condensed matter and materials physics, American Physical Society, 2013, 88 (11), pp.115427. 〈10.1103/PhysRevB.88.115427〉
Liste complète des métadonnées

Littérature citée [31 références]  Voir  Masquer  Télécharger

https://hal-iogs.archives-ouvertes.fr/hal-01335075
Contributeur : Marie-Laure Edwards <>
Soumis le : mardi 21 juin 2016 - 16:23:08
Dernière modification le : jeudi 11 janvier 2018 - 06:26:44

Fichier

PhysRevB.88Losquin.pdf
Fichiers éditeurs autorisés sur une archive ouverte

Identifiants

Collections

Citation

Arthur Losquin, Sophie Camelio, David Rossouw, Mondher Besbes, Frédéric Pailloux, et al.. Experimental evidence of nanometer-scale confinement of plasmonic eigenmodes responsible for hot spots in random metallic films. Physical Review B : Condensed matter and materials physics, American Physical Society, 2013, 88 (11), pp.115427. 〈10.1103/PhysRevB.88.115427〉. 〈hal-01335075〉

Partager

Métriques

Consultations de la notice

192

Téléchargements de fichiers

33