Dresden 2017 – scientific programme
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MA: Fachverband Magnetismus
MA 67: Poster 4
MA 67.5: Poster
Friday, March 24, 2017, 09:30–13:00, P2-OG3
Nanotubes, a novel layout for magnonic applications. — •Jorge A. Otálora1, Jürgen Lindner2, Kornelius Nielsch3, Pedro Landeros4, and Attila Kákay3 — 1Departamento de Física, CEDENNA, Universidad Santiago de Chile, USACH, 9170124 Santiago, Chile — 2HZDR, Institute of Ion Beam Physics and Materials Research, Bautzner Landstraße 400, 01328 Dresden, Germany — 3Institute of Metallic Materials at the Leibniz Institute for Solid State and Materials Research, IFW, 01069 Dresden, Germany — 4Departamento de Física, Universidad Técnica Federico Santa María, Avenida España 1680, Casilla 110-V, Valparaíso, Chile
The knowledge of mechanisms and architectures for controlling spin waves in ferromagnetic systems can be exploited within novel electronic devices. In this context, magnonic devices are proposed in the fields of signal processing, data computation as well as information transfer. In this work we propose a novel system that will significantly foster the endeavor, namely magnetic nanotubes. Here, we highlight their tunable and non-reciprocal spin wave properties. Their curvature-induced non-reciprocity is significant and is present not only in the SWs dispersion, but also manifests itself via a wavevector-dependent absorption leading to the difference in the extinction length of counter-propagating SWs along the tube length[1]. The non-reciprocity can be controlled with application of weak DC external magnetic fields along the tube's large axis. Our findings suggest that magnetic nanotubes can be exploited as a novel layout for flexible and reconfigurable magnonic circuits.[1]J.A. Otálora, et. al., Phys. Rev. Lett. 117, 227203 (2016)