Abstract
Progress in spintronics continues briskly, with many different approaches and physical phenomena underlying candidate technologies. This study uses modern spin-wave theory to predict the magnonic spectrum of a cylindrical synthetic antiferromagnet consisting of two coaxial nanotubes. The proposed device incorporates two coupled ferromagnetic nanotubes hosting oppositely magnetized vortices. Nonreciprocal features of the proposed architecture are provided by both intra- and interlayer dipolar coupling. Unidirectional spin-wave behavior is found, which may impact the realization of low-power magnonic devices operating at nano- to micrometer scales.
Published Version
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