Magnetism

Suppression of exchanged spin waves in a film with a partial magnetic coating

V. D. Poimanov

N. S. Enikolopov Institute of Synthetic Polymer Materials RAS, Moscow, Russia

Abstract: The paper considers the scattering of an exchanged spin wave in a system consisting of an unlimited magnetic film and a thin magnetic layer located above it in the form of a magnetic stripe of finite or infinite width. It is shown that the main damping mechanism is the excitation of anti-Larmor precession in the stripe during antiferromagnetic interaction with the film magnetization, which corresponds to an evanescent spin wave. The reflection and transmission coefficients and the distribution of the field of the converted spin wave along the film are obtained. The scattering coefficients and distribution of the field of the converted spin wave along the film are obtained.

Keywords: magnon waveguide, chirality of magnetization precession, evanescent spin waves, indirect exchange interaction (RKKY), reflection and transmission of exchange spin waves.

Received: 09.08.2023
Revised: 28.09.2023
Accepted: 29.09.2023

DOI: 10.61011/FTT.2023.11.56547.176

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