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MA: Fachverband Magnetismus

MA 15: Magnetism Poster A

MA 15.35: Poster

Dienstag, 2. April 2019, 10:00–13:00, Poster E

Characterization of individual YIG/Pt nano-structures via Spin Transfer Torque-FMR — •Steffen Steinert¹, Björn Heinz^1,2, Thomas Brächer¹, Michael Schneider¹, Philipp Pirro¹, Bert Lägel¹, Anna M. Friedel¹, David Breitbach¹, Carsten Dubs³, Burkard Hillebrands¹, 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 investigate spin-wave conduits fabricated from a thin YIG(27nm)/Pt(10nm) bi-layer system with varying width ranging from microns down to about 100nm. The investigation of the magnetic properties, e.g. the ferromagnetic resonance linewidth (FMR), in dependency of the width of the structure is carried out by means of spin transfer torque ferromagnetic resonance spectroscopy (ST-FMR). In addition, the impact of an applied dc-current on the linewidth is examined. This research has been supported by ERC Starting Grant 678309 MagnonCircuits and DFG Grant DU 1427/2-1.