Plasmonic nanostructures: Local versus nonlocal response

Giuseppe Toscano*, Martijn Wubs, Sanshui Xiao, Min Yan, Z. Fatih Öztürk, Antti Pekka Jauho, N. Asger Mortensen

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

11 Citations (Scopus)

Abstract

We study the importance of taking the nonlocal optical response of metals into account for accurate determination of optical properties of nanoplasmonic structures. Here we focus on the computational physics aspects of this problem, and in particular we report on the nonlocal-response package that we wrote for state-of the art numerical software, enabling us to take into account the nonlocal material response of metals for any arbitrarily shaped nanoplasmonic structures, without much numerical overhead as compared to the standard local response. Our method is a frequency-domain method, and hence it is sensitive to possible narrow resonances that may arise due to strong electronic quantum confinement in the metal. This feature allows us to accurately determine which geometries are strongly affected by nonlocal response, for example regarding applications based on electric field enhancement properties for which metal nanostructures are widely used.

Original languageEnglish
Title of host publicationPlasmonics
Subtitle of host publicationMetallic Nanostructures and Their Optical Properties VIII
Volume7757
DOIs
Publication statusPublished - 1 Dec 2010
MoE publication typeA4 Article in a conference publication
EventPlasmonics: Metallic Nanostructures and Their Optical Properties - San Diego, United States
Duration: 1 Aug 20105 Aug 2010
Conference number: VIII

Conference

ConferencePlasmonics: Metallic Nanostructures and Their Optical Properties
CountryUnited States
CitySan Diego
Period01/08/201005/08/2010

Keywords

  • Field enhancement
  • Hydrodynamical Drude model
  • Nanoplasmonics
  • Nonlocal optical response

Fingerprint Dive into the research topics of 'Plasmonic nanostructures: Local versus nonlocal response'. Together they form a unique fingerprint.

Cite this