Tuning the Magneto-Optical Response of Nanosize Ferromagnetic Ni Disks Using the Phase of Localized Plasmons
Journal article, 2013
We explore the influence of the phase of localized plasmon resonances on the magneto-optical activity of nanoferromagnets. We demonstrate that these systems can be described as two orthogonal damped oscillators coupled by the spin-orbit interaction. We prove that only the spin-orbit induced transverse plasmon plays an active role on the magneto-optical properties by controlling the relative amplitude and phase lag between the two oscillators. Our theoretical predictions are fully confirmed by magneto-optical Kerr effect and optical extinction measurements in nanostructures of different size and shape.
FILMS
ENHANCED MAGNETOOPTICS
PARTICLES
ELLIPSOMETRY
RESONANCE
MAGNETOPLASMONICS
OPTICAL-PROPERTIES
ROTATION
FARADAY-ROTATION
NICKEL
KERR
IU KW
Author
N. Maccaferri
A. Berger
Stefano Bonetti
V. Bonanni
M. Kataja
Q. H. Qin
S. van Dijken
Zhaleh Pirzadeh Irannezhad
Chalmers, Applied Physics, Bionanophotonics
Alexander Dmitriev
Chalmers, Applied Physics, Bionanophotonics
Josep Nogues
Johan Åkerman
University of Gothenburg
Paolo Vavassori
Physical Review Letters
0031-9007 (ISSN) 1079-7114 (eISSN)
Vol. 111 16 artikel nr 167401- 167401Subject Categories
Physical Sciences
DOI
10.1103/PhysRevLett.111.167401