Experimental determination and micromagnetic analysis of spin wave modes in cylindrical nanowires
Résumé
We report an experimental study of spin wave modes in individual cylindrical nanowires, a textbook situation of confined spin waves in 3D nanomagnetism. We observe discrete modes of thermal spin waves with micro-Brillouin light scattering, whose frequencies f shift to higher values as the applied longitudinal induction magnetic field Bz increases. Micromagnetic simulations allowed us to associate every f(Bz) curve to a given spatial mode, labeled with radial and azimuthal indices ℓ and m.
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