Berlin 2018 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 8: Focus Session: Magnetic structurally and compositionally modulated nanowires and nanotubes

MA 8.3: Hauptvortrag

Montag, 12. März 2018, 15:45–16:15, H 1012

Towards a three dimensional curvilinear magnonic transducer — •Jorge A Otalora¹, Jürgen Lindner², Helmut Schultheiss², Kilian Lenz², Andy Thomas¹, Kornelius Nielsch^1,3, and Attila Kákay² — ¹Leibniz Institute for Solid State and Materials Research Dresden (IFW Dresden), Institute for Metallic Materials, 01069 Dresden, Germany — ²HZDR, Institute of Ion Beam Physics and Materials Research, Bautzner Landstraße 400, 01328 Dresden, Germany — ³Technische Universität Dresden, Institute of Materials Science, 01062 Dresden, Germany

Curving a two dimensional magnetic membrane gives rise to asymmetries in the spin-waves (SWs) properties. Magnetic nanotubes provides an example, for which the mean curvature of the tubular shape creates asymmetries in frequency and lifetime in a similar fashion like the Dzyaloshinskii-Moriya interaction in a ferromagnetic/heavy metal interface. Here, an inductive transducer composed of two coplanar wave guides and a magnetic nanotube is proposed, predicting a straightforward access to the curvature-induced asymmetric properties of SWs via detecting the reflection/transmission parameters of the device. With the presented results, it is expected to give a step further towards the implementation of curved membranes as three dimensional layouts for magnonic applications.