Work

Resonant spin wave excitation in magnetoplasmonic bilayers using short laser pulses

Year: 2019

Type: article

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.

Source: Nanoscale

DOI: 10.1039/c8nr09989h

Authors: Stanislav Kolodny, Dmitry Yudin, Ivan Iorsh

Institution: ITMO University

Language: English

Topic: Magnetic properties of thin films

Subfield: Condensed Matter Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funders: Russian Foundation for Basic Research, Ministry of Education and Science of the Russian Federation, Russian Science Foundation