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Issue 4, 2019
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Resonant spin wave excitation in magnetoplasmonic bilayers using short laser pulses

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Abstract

In magnetically ordered solids a static magnetic field can be generated by virtue of the transverse magneto-optical Kerr effect (TMOKE). Moreover, the latter was shown to be dramatically enhanced due to the optical excitation of surface plasmons in nanostructures with relatively small optical losses. In this paper we suggest a new method for resonant optical excitation in a prototypical bilayer composed of a noble metal (Au) with grating and a ferromagnetic thin film of yttrium iron garnet (YIG) via a frequency comb. Based on magnetization dynamics simulations we show that for a frequency comb with certain parameters, chosen to be resonant with the spin-wave excitations of YIG, the TMOKE is drastically enhanced, hinting at possible technological applications in optical control of spintronics systems.

Graphical abstract: Resonant spin wave excitation in magnetoplasmonic bilayers using short laser pulses

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Article information


Submitted
10 Dec 2018
Accepted
23 Dec 2018
First published
05 Jan 2019

Nanoscale, 2019,11, 2003-2007
Article type
Paper

Resonant spin wave excitation in magnetoplasmonic bilayers using short laser pulses

S. Kolodny, D. Yudin and I. Iorsh, Nanoscale, 2019, 11, 2003
DOI: 10.1039/C8NR09989H

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