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MA: Fachverband Magnetismus

MA 56: Spin-Hall effects

MA 56.2: Talk

Friday, March 16, 2018, 09:45–10:00, H 0112

Spin-pumping in La_0.7Sr_0.3MnO₃/LaNiO₃/Pt heterostructures — •Christoph Hauser¹, Camillo Ballani¹, Christian Eisenschmidt¹, Frank Heyroth², and Georg Schmidt^1,2 — ¹Martin-Luther Universität Halle-Witteberg, Institut für Physik, Halle — ²Interdisziplinäres Zentrum für Materialwissenschaften, Universität Halle, Halle

We have investigated spin pumping and the inverse spin Hall effect in heterostructures based on Lathanum Strontium Manganite (LSMO) and Lanthanum Nickel Oxide (LNO). The layers are deposited by pulsed laser deposition on different substrates. Magnetic and structural characterization is done by X-ray, TEM, SQUID magnetometry and ferromagnetic resonance at 120 K. Spin pumping and inverse spin Hall effect are also measured at T = 120 K below the Curie temperature of the LSMO. For LSMO/LNO additional damping in FMR could be detected, however the ISHE signal is too small to be distinguished from artefacts related to rectification of the RF signal in the LSMO. For LSMO/LNO/Pt trilayers, however, a clear ISHE can be detected, indicating that the spin scattering in the LNO is relatively weak while spin puming from the LSMO through the LNO is quite efficient.