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Designer Magnetoplasmonics with Nickel Nanoferromagnets

Journal article
Authors Valentina Bonanni
Stefano Bonetti
Tavakol Pakizeh
Zhaleh Pirzadeh
Jianing Chen
Josep Nogues
Paolo Vavassori
Rainer Hillenbrand
Johan Åkerman
Alexandre Dmitriev
Published in Nano Letters
Volume 11
Pages 5333
ISSN 1530-6984
Publication year 2011
Published at Department of Physics (GU)
Pages 5333
Language en
Links dx.doi.org/10.1021/nl2028443
https://gup.ub.gu.se/file/126106
Subject categories Optics, Optical physics, Magnetism

Abstract

We introduce a new perspective on magnetoplasmonics in nickel nanoferromagnets by exploiting the phase tunability of the optical polarizability due to localized surface plasmons and simultaneous magneto-optical activity. We demonstrate how the concerted action of nanoplasmonics and magnetization can manipulate the sign of rotation of the reflected light’s polarization (i.e., to produce Kerr rotation reversal) in ferromagnetic nanomaterials and, further, how this effect can be dynamically controlled and employed to devise conceptually new schemes for biochemosensing.

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