Article (Scientific journals)
Polarizability and magnetoplasmonic properties of magnetic general nanoellipsoids.
Maccaferri, Nicolò; Gonzalez-Diaz, Juan B.; Bonetti, Stefano et al.
2013In Optics Express, 21 (8), p. 9875-9889
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Keywords :
Polarizability; Ellipsoid; Magnetic Fields; Metal Nanoparticles; Nickel; Surface Plasmon Resonance
Abstract :
[en] 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.
Disciplines :
Physics
Author, co-author :
Maccaferri, Nicolò ;  CIC nanoGUNE
Gonzalez-Diaz, Juan B.
Bonetti, Stefano
Berger, Andreas
Kataja, Mikko
van Dijken, Sebastiaan
Nogues, Josep
Bonanni, Valentina
Pirzadeh, Zhaleh
Dmitriev, Alexandre
Akerman, Johan
Vavassori, Paolo
External co-authors :
yes
Language :
English
Title :
Polarizability and magnetoplasmonic properties of magnetic general nanoellipsoids.
Publication date :
2013
Journal title :
Optics Express
ISSN :
1094-4087
Publisher :
Optical Society of America, Washington, United States - District of Columbia
Volume :
21
Issue :
8
Pages :
9875-9889
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBilu :
since 22 February 2019

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