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Polarizability and magnetoplasmonic properties of magnetic general nanoellipsoids
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2013 (English)In: Optics Express, ISSN 1094-4087, Vol. 21, no 8, 9875-9889 p.Article in journal (Refereed) Published
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.

Place, publisher, year, edition, pages
2013. Vol. 21, no 8, 9875-9889 p.
Keyword [en]
Depolarization effects, Magnetic nano-particles, Magneto-optical activity, Magneto-optical spectra, Magnetooptical properties, Plasmonic nanostructures, Polar Kerr configuration, Quantitative agreement
National Category
Engineering and Technology
URN: urn:nbn:se:kth:diva-123118DOI: 10.1364/OE.21.009875ISI: 000318151600064ScopusID: 2-s2.0-84877121842OAI: diva2:624938
Swedish Research CouncilSwedish Foundation for Strategic Research , RMA08

QC 20130603

Available from: 2013-06-03 Created: 2013-06-03 Last updated: 2013-06-03Bibliographically approved

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Åkerman, Johan
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Material Physics, MF
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