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MA: Fachverband Magnetismus
MA 44: Spininjection / Spin currents in heterostructures
MA 44.6: Vortrag
Donnerstag, 10. März 2016, 16:30–16:45, H31
Spin-pumping and Inverse Spin-Hall-effect in Strontium ruthenate grown on Yttrium Iron garnet — •Tim Richter1, Maximilian Paleschke1, Martin Wahler1, Frank Heyroth2, Hakan Deniz3, Dietrich Hesse3, and Georg Schmidt1,2 — 1Fachbereich Physik, Martin-Luther-Universität Halle Wittenberg, Halle(Saale), Germany — 2Interdisziplinäres Zentrum für Materialwissenschaften, Halle(Saale), Germany — 3Max-Planck-Institut für Mikrostrukturphyik, Halle(Saale), Germany
Ferromagnetic oxides recently gained importance due to their application in spintronics. They can exhibit an extraordinary high spin polarization, which can be used for highly efficient tunneling magnetoresistance but also for spin pumping and inverse spin Hall effect invastigations. Especially Y3Fe5O12 (YIG - ferrimagnetic oxide at room temperature) is a prototypical source for spin pumping because its insulating nature and exceptionally low damping greatly facilitate the experiments. YIG is used for many investigation of ISHE using metals or polymers as a spin sink. Here we show an all-oxide heterostructure consisting YIG as a source and SrRuO3 as a spin sink. Both materials were grown in situ with PLD. Although YIG is grown in a garnet structure and SRO naturally in a perovskite structure, we observe spin-pumping in SRO by FMR-measurements. Even the ISHE in SRO can be detected. We will present results from structural characterization including TEM and electron diffraction as well as from FMR and ISHE measurements. These results open up new possibilities for all oxide heterostructures with different crystal systems in spintronics.