Molding of plasmonic resonances in metallic nanostructures: Dependence of the non-linear electric permittivity on system size and temperature

Alessandro Alabastri*, Salvatore Tuccio, Andrea Giugni, Andrea Toma, Carlo Liberale, Gobind Das, Francesco De Angelis, Enzo Di Fabrizio, Remo Proietti Zaccaria

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

82 Scopus citations

Abstract

In this paper, we review the principal theoretical models through which the dielectric function of metals can be described. Starting from the Drude assumptions for intraband transitions, we show how this model can be improved by including interband absorption and temperature effect in the damping coefficients. Electronic scattering processes are described and included in the dielectric function, showing their role in determining plasmon lifetime at resonance. Relationships among permittivity, electric conductivity and refractive index are examined. Finally, a temperature dependent permittivity model is presented and is employed to predict temperature and non-linear field intensity dependence on commonly used plasmonic geometries, such as nanospheres. 2013 by the authors; licensee MDPI, Basel, Switzerland.
Original languageEnglish (US)
Pages (from-to)4879-4910
Number of pages32
JournalMaterials
Volume6
Issue number11
DOIs
StatePublished - Oct 25 2013

Bibliographical note

KAUST Repository Item: Exported on 2020-04-23

Keywords

  • Nanostructures
  • Non-linear optics
  • Photonics
  • Plasmonics
  • Temperature dependence
  • Thermoplasmonics

ASJC Scopus subject areas

  • Materials Science(all)

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