Influence of magnetic surface anisotropy on spin wave reflection from the edge of ferromagnetic film

Abstract

We study propagation of the Gaussian beam of spin waves and its reflection from the edge of thin yttrium-iron-garnet film with in-plane magnetization perpendicular to this edge. We have performed micromagnetic simulations supported by analytical calculations to investigate influence of the surface magnetic anisotropy present at the film edge on the reflection, especially in the context of the Goos-Hanchen effect. We have shown the appearance of a negative lateral shift between reflected and incident spin wave beams' spots. This shift is particularly sensitive to the surface magnetic anisotropy value and is a result of the Goos-Hanchen shift which is sensitive to the magnitude of the anisotropy and of the bending of spin wave beam. We have demonstrated that the demagnetizing field provide graded increase of the refractive index for spin waves, which is responsible for the bending.

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• Probing the Dzyaloshinskii-Moriya interaction via the propagation of spin waves in ferromagnetic thin films
• Goos-Hänchen effect in light transmission through biperiodic photonic-magnonic crystals
• Skew scattering and side jump of spin wave across magnetic texture
• Ultra-low damping in lift-off structured yttrium iron garnet thin films
• Goos-Hänchen effect of spin waves at heterochiral interfaces
• Edge localization of spin waves in antidot multilayers with perpendicular magnetic anisotropy
• Geometric magnonics with chiral magnetic domain walls
• Snell's law for spin waves at a 90-degree domain wall
• Interplay between spin wave and magnetic vortex
• All-Angle Collimation for Spin Waves
• Goos-Hanchen Shift of a Spin-Wave Beam at the Interface Between Two Ferromagnets
• Comparison of spin-wave transmission in parallel and antiparallel magnetic configurations
• A coupled magneto-structural continuum model for multiferroic ${\mathrm{BiFeO}}_3$
• Spin-wave Goos-Hänchen effect induced by 360 degree domain walls in magnetic heterostructures