TITLE

Plasmon-assisted high reflectivity and strong magneto-optical Kerr effect in permalloy gratings

AUTHOR(S)
Kostylev, Nikita; Maksymov, Ivan S.; Adeyeye, Adekunle O.; Samarin, Sergey; Kostylev, Mikhail; Williams, Jim F.
PUB. DATE
March 2013
SOURCE
Applied Physics Letters;3/25/2013, Vol. 102 Issue 12, p121907
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We demonstrate experimentally a strong plasmon-assisted enhancement of the transverse magneto-optical Kerr effect in permalloy gratings. The enhanced transverse magneto-optical Kerr effect is accompanied by an increased grating reflectivity with the maximum of enhancement being correlated with plasmonic Fano resonances. This correlation was confirmed by an intuitive Fano model and also through full-vectorial optical simulations. Simultaneously high reflectivity and transverse magneto-optical Kerr effect as well as narrowest ferromagnetic resonance linewidth and vanishing anisotropy make permalloy nanostructures attractive for applications in spintronics and nano-optics such as, for example, all-optical excitation of propagating spin waves and spectral tuning of optical nanoantennas.
ACCESSION #
86446897

 

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