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arXiv · 0904.0332

Current-controlled dynamic magnonic crystal

A. V. Chumak·T. Neumann·A. A. Serga·B. Hillebrands·M. P. Kostylev
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Abstract

We demonstrate a current-controlled, dynamic magnonic crystal. It consists of a ferrite film whose internal magnetic field exhibits a periodic, cosine-like variation. The field modulation is created by a direct current flowing through an array of parallel wires placed on top of a spin-wave waveguide. A single, pronounced rejection band in the spin-wave transmission characteristics is formed due to spin-wave scattering from the inhomogeneous magnetic field. With increasing current the rejection band depth and its width increase strongly. The magnonic crystal allows a fast control of its operational characteristics via the applied direct current. Simulations confirm the experimental results.

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A. V. Chumak, T. Neumann, A. A. Serga, B. Hillebrands, M. P. Kostylev. 2009-04-02. Current-controlled dynamic magnonic crystal. https://doi.org/10.1088/0022-3727/42/20/205005

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