Polarizability and magnetoplasmonic properties of magnetic general nanoellipsoids

Nicolò Maccaferri; Juan B. González-Diaz; Stefano Bonetti; Andreas Berger; Mikko Kataja; Sebastiaan Van Dijken; Josep Nogués; Valentina Bonanni; Zhaleh Pirzadeh; Alexandre Dmitriev; Johan Åkerman; Paolo Vavassori

doi:10.1364/OE.21.009875

Polarizability and magnetoplasmonic properties of magnetic general nanoellipsoids

Nicolò Maccaferri, Juan B. González-Diaz, Stefano Bonetti, Andreas Berger, Mikko Kataja, Sebastiaan Van Dijken, Josep Nogués, Valentina Bonanni, Zhaleh Pirzadeh, Alexandre Dmitriev, Johan Åkerman, Paolo Vavassori

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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 Optical Society of America.

Idioma original	Anglès
Pàgines (de-a)	9875-9889
Revista	Optics Express
Volum	21
Número	8
DOIs	https://doi.org/10.1364/OE.21.009875
Estat de la publicació	Publicada - 22 d’abr. 2013

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10.1364/OE.21.009875

https://ddd.uab.cat/record/112842

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@article{b230768563694e8d83b2ac9bc1d525ce,

title = "Polarizability and magnetoplasmonic properties of magnetic general nanoellipsoids",

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. {\textcopyright} 2013 Optical Society of America.",

author = "Nicol{\`o} Maccaferri and Gonz{\'a}lez-Diaz, {Juan B.} and Stefano Bonetti and Andreas Berger and Mikko Kataja and {Van Dijken}, Sebastiaan and Josep Nogu{\'e}s and Valentina Bonanni and Zhaleh Pirzadeh and Alexandre Dmitriev and Johan {\AA}kerman and Paolo Vavassori",

year = "2013",

month = apr,

day = "22",

doi = "10.1364/OE.21.009875",

language = "English",

volume = "21",

pages = "9875--9889",

journal = "Optics Express",

issn = "1094-4087",

publisher = "The Optical Society",

number = "8",

}

TY - JOUR

T1 - Polarizability and magnetoplasmonic properties of magnetic general nanoellipsoids

AU - Maccaferri, Nicolò

AU - González-Diaz, Juan B.

AU - Bonetti, Stefano

AU - Berger, Andreas

AU - Kataja, Mikko

AU - Van Dijken, Sebastiaan

AU - Nogués, Josep

AU - Bonanni, Valentina

AU - Pirzadeh, Zhaleh

AU - Dmitriev, Alexandre

AU - Åkerman, Johan

AU - Vavassori, Paolo

PY - 2013/4/22

Y1 - 2013/4/22

N2 - 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 Optical Society of America.

AB - 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 Optical Society of America.

U2 - 10.1364/OE.21.009875

DO - 10.1364/OE.21.009875

M3 - Article

SN - 1094-4087

VL - 21

SP - 9875

EP - 9889

JO - Optics Express

JF - Optics Express

IS - 8

ER -

Polarizability and magnetoplasmonic properties of magnetic general nanoellipsoids

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