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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 8 — Apr. 22, 2013
  • pp: 9875–9889

Polarizability and magnetoplasmonic properties of magnetic general nanoellipsoids

Nicolò Maccaferri, Juan B. González-Díaz, Stefano Bonetti, Andreas Berger, Mikko Kataja, Sebastiaan van Dijken, Josep Nogués, Valentina Bonanni, Zhaleh Pirzadeh, Alexandre Dmitriev, Johan Åkerman, and Paolo Vavassori  »View Author Affiliations

Optics Express, Vol. 21, Issue 8, pp. 9875-9889 (2013)

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An approach to compute the polarizability tensor of magnetic nanoparticles having general ellipsoidal shape is presented. We find a surprisingly excellent quantitative agreement between calculated and experimental magneto-optical spectra measured in the polar Kerr configuration from nickel nanodisks of large size (exceeding 100 nm) with circular and elliptical shape. In spite of its approximations and simplicity, the formalism presented here captures the essential physics of the interplay between magneto-optical activity and the plasmonic resonance of the individual particle. The results highlight the key role of the dynamic depolarization effects to account for the magneto-optical properties of plasmonic nanostructures.

© 2013 OSA

OCIS Codes
(160.1190) Materials : Anisotropic optical materials
(160.3820) Materials : Magneto-optical materials
(290.5850) Scattering : Scattering, particles

ToC Category:

Original Manuscript: February 5, 2013
Revised Manuscript: March 13, 2013
Manuscript Accepted: March 28, 2013
Published: April 12, 2013

Nicolò Maccaferri, Juan B. González-Díaz, Stefano Bonetti, Andreas Berger, Mikko Kataja, Sebastiaan van Dijken, Josep Nogués, Valentina Bonanni, Zhaleh Pirzadeh, Alexandre Dmitriev, Johan Åkerman, and Paolo Vavassori, "Polarizability and magnetoplasmonic properties of magnetic general nanoellipsoids," Opt. Express 21, 9875-9889 (2013)

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