Regensburg 2019 – wissenschaftliches Programm
MA 36.5: Vortrag
Mittwoch, 3. April 2019, 16:00–16:15, H53
Non-local magnetotransport in ferromagnetic insulator/Pt heterostructures — •Richard Schlitz1,2, Toni Helm3,4, Michaela Lammel5, Kornelius Nielsch5,6, Artur Erbe4, and Sebastian T.B. Goennenwein1, 2 — 1Institut für Festkörper- und Materialphysik, Technische Universität Dresden, Germany — 2Center for Transport and Devices of Emergent Materials, Technische Universität Dresden, Germany — 3Max Planck Institute for Chemical Physics of Solids, Dresden, Germany — 4Helmholtz-Zentrum Dresden-Rossendorf e.V., Germany — 5Leibniz Institute for Solid State and Materials Research Dresden (IFW Dresden), Institute for Metallic Materials, Dresden, Germany — 6Technische Universität Dresden, Institute of Materials Science, Germany
Non-local long range spin transport phenomena in yttrium iron garnet/Pt heterostructures recently attracted a lot of interest. The experiments are commonly interpreted in terms of magnon diffusion in combination with spin Hall physics. In this study, we first reproduce the fingerprint of the non-local magnetoresistance reported in literature by rotations of the magnetic field in three mutually orthogonal planes and current dependent experiments. After characterization we use a focused ion beam (FIB) to alter the shape of the yttrium iron garnet film in between the Pt contacts and study the ensuing changes in the non-local transport properties. Our results corroborate that magnon transport indeed is the main mechanism for the non-local transport.
 L. J. Cornelissen et al., Nature Physics 11, 1022-1026 (2015)