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In this letter, an asymmetric spin wave scattering behaviors caused by vortexchirality are investigated in cross-shaped ferromagnetic system. In the system,four scattering behaviors are found, 1) asymmetric skew scattering, dependingon the polarity of vortex core, 2) back scattering (reflection), depending onthe vortex core stiffness, 3) side deflection scattering, depending onstructural symmetry of the vortex circulation, and 4) geometrical scattering,depending on waveguide structure. The first and second scattering behaviors areattributed to nonlinear topological magnon spin Hall effect related to magnonspin-transfer torque effect, which has value for magnonic exploration andapplication.

Asymmetric scattering behaviors of spin wave dependent on magnetic vortex chirality