Designer magnetoplasmonics with nickel nanoferromagnets

Valentina Bonanni, Stefano Bonetti, Tavakol Pakizeh, Zhaleh Pirzadeh, Jianing Chen, Josep Nogués, Paolo Vavassori, Rainer Hillenbrand, Johan Åkerman, Alexandre Dmitriev

Research output: Contribution to journalArticleResearchpeer-review

156 Citations (Scopus)

Abstract

We introduce a new perspective on magnetoplasmonics in nickel nanoferromagnets by exploiting the phase tunability of the optical polarizability due to localized surface plasmons and simultaneous magneto-optical activity. We demonstrate how the concerted action of nanoplasmonics and magnetization can manipulate the sign of rotation of the reflected light's polarization (i.e., to produce Kerr rotation reversal) in ferromagnetic nanomaterials and, further, how this effect can be dynamically controlled and employed to devise conceptually new schemes for biochemosensing. © 2011 American Chemical Society.
Original languageEnglish
Pages (from-to)5333-5338
JournalNano Letters
Volume11
Issue number12
DOIs
Publication statusPublished - 14 Dec 2011

Keywords

  • Kerr rotation
  • Localized surface plasmon resonance
  • magnetic nanoparticles
  • magneto-optical effect
  • magnetoplasmonics

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