Spin-wave interference in three-dimensional rolled-up ferromagnetic microtubes

Abstract

We have investigated spin-wave excitations in rolled-up Permalloy microtubes using microwave absorption spectroscopy. We find a series of quantized azimuthal modes which arise from the constructive interference of Damon-Eshbach type spin waves propagating around the circumference of the microtubes, forming a spin-wave resonator. The mode spectrum can be tailored by the tube's radius and number of rolled-up layers.

12 pages, 4 figures

References in corpus (1)

• Interactions of spin waves with a magnetic vortex

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