Regensburg 2019 – scientific programme
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MA: Fachverband Magnetismus
MA 15: Magnetism Poster A
MA 15.46: Poster
Tuesday, April 2, 2019, 10:00–13:00, Poster E
Spin-wave propagation in individual sub-micron YIG magnonic conduits — •Björn Heinz1,2, Thomas Brächer1, Michael Schneider1, Philipp Pirro1, Bert Lägel1, David Breitbach1, Anna M. Friedel1, Carsten Dubs3, and Andrii V. Chumak1 — 1Fachbereich Physik and Landesforschungszentrum OPTIMAS, Technische Universität Kaiserslautern, 67663 Kaiserslautern, Germany — 2Graduate School Materials Science in Mainz, Staudingerweg 9, 55128 Mainz, Germany — 3INNOVENT e.V., Technologieentwicklung Jena, 07745 Jena, Germany
Yttrium iron garnet (YIG) is a unique material with outstanding magnetic properties such as the lowest known spin-wave damping. It is therefore well suited for the investigation of fundamental spin-wave dynamics and a promising candidate for the application in spin-wave based circuits and logic devices. In this work, we study the impact of nanostructuring by means of electron beam lithography and successive ion milling on individual spin-wave waveguides. These structures are fabricated from a 44 nm thin film grown by liquid phase epitaxy (LPE). Their width varies from a few microns down to the sub-100 nm regime. By exciting the magnetization dynamics with a coplanar waveguide antenna and performing spacial resolved Brillouin light scattering (BLS) microscopy measurements, we investigate the spin-wave decay length in these conduits in dependency on the conduit width. Additionally the spin-wave mode spectra are extracted by means of thermal BLS measurements. This research has been supported by ERC Starting Grant 678309 MagnonCircuits and DFG Grant DU 1427/2-1.