Non-reciprocal light scattering by lattice of magnetic vortices
O. G. Udalov, M. V. Sapozhnikov, E. A. Karashtin, B. A. Gribkov, S. A., Gusev, E. V. Skorohodov, V. V. Rogov, A. Yu. Klimov, A. A. Fraerman
TL;DR
This study investigates how the vortex magnetization in a 2D lattice of magnetic nanoparticles influences light scattering, showing controllable diffraction intensity via external magnetic fields, supported by phenomenological theory.
Contribution
It presents the first experimental demonstration of vortex magnetization affecting light scattering in nanoparticle lattices and explains the phenomenon with a phenomenological model.
Findings
Light scattering intensity depends on vortex magnetization vorticity.
External magnetic fields can manipulate scattering patterns.
Phenomenological theory explains the experimental observations.
Abstract
We report on experimental study of optical properties of two-dimensional square lattice of triangle Co and CoFe nanoparticles with a vortex magnetization distribution. We demonstrate that intensity of light scattered in diffraction maxima depends on the vorticity of the particles magnetization and it can be manipulated by applying an external magnetic field. The experimental results can be understood in terms of phenomenological theory.
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