Plasmon-enhanced magneto-optical activity in ferromagnetic membranes

Experimental and theoretical evidence of plasmon-enhanced Kerr rotation in purely ferromagnetic membranes with sufficiently small dimensions to be out of extraordinary optical transmission conditions (45 nm pore diameter, 90nm lattice constant), is reported in this work. It is shown that the spectra...

Full description

Saved in:
Bibliographic Details
Published in:Applied physics letters 2009-06, Vol.94 (26), p.263101-263101-3
Main Authors: González-Díaz, J. B., García-Martín, J. M., García-Martín, A., Navas, D., Asenjo, A., Vázquez, M., Hernández-Vélez, M., Armelles, G.
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Experimental and theoretical evidence of plasmon-enhanced Kerr rotation in purely ferromagnetic membranes with sufficiently small dimensions to be out of extraordinary optical transmission conditions (45 nm pore diameter, 90nm lattice constant), is reported in this work. It is shown that the spectral location of the enhanced Kerr rotation region varies as the refractive index of the material inside the pore is modified. A similar behavior is obtained if the pore radius changes while keeping the pore concentration unchanged. Those are clear signatures indicating that localized surface plasmon resonances propagating along the pores govern the magneto-optical response of the membrane.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.3167297