Polarizability and magnetoplasmonic properties of magnetic general nanoellipsoids
Maccaferri, Nicolò (CIC nanoGUNE Consolider. Nanomagnetism Group)
González-Díaz, Juan B. (CIC nanoGUNE Consolider. Nanomagnetism Group)
Bonetti, Stefano (SLAC National Accelerator Laboratory)
Berger, Andreas (CIC nanoGUNE Consolider. Nanomagnetism Group)
Kataja, Mikko (Aalto-yliopiston teknillinen korkeakoulu. Teknillisen fysiikan laitos. NanoSpin)
Van Dijken, Sebastiaan (Aalto-yliopiston teknillinen korkeakoulu. Teknillisen fysiikan laitos. NanoSpin)
Nogués, Josep (Institut Català de Nanociència i Nanotecnologia)
Bonanni, Valentina (Istituto di Scienze e Tecnologie Molecolari)
Pirzadeh, Zhaleh (Chalmers tekniska högskola. Institutionen för teknisk fysik)
Dmitriev, Alexandre (Chalmers tekniska högskola. Institutionen för teknisk fysik)
Åkerman, Johan (Kungl. Tekniska högskolann. Materialfysik)
Vavassori, Paolo (Ikerbasque)

Date:	2013
Abstract:	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.
Grants:	Ministerio de Economía y Competitividad MAT2012-36844 Ministerio de Economía y Competitividad MAT2010-20616-C02 Agència de Gestió d'Ajuts Universitaris i de Recerca 2009/SGR-1292
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Language:	Anglès
Document:	Article ; recerca ; Versió publicada
Subject:	Materials ; Propietats magnètiques ; Nanopartícules ; Anisotropia
Published in:	Optics express, Vol. 21, Núm. 8 (April 2013) , p. 9875-9889, ISSN 1094-4087

DOI: 10.1364/OE.21.009875

cop. 2013 OSA 15 p, 924.6 KB

The record appears in these collections:
Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > Group of Smart Nanoengineered Materials, Nanomechanics and Nanomagnetism (Gnm3)
Research literature > UAB research groups literature > Research Centres and Groups (research output) > Experimental sciences > Catalan Institute of Nanoscience and Nanotechnology (ICN2)
Articles > Research articles
Articles > Published articles