Berlin 2012 – scientific programme

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MA: Fachverband Magnetismus

MA 52: Poster II - Magnetic Heusler compounds, Magnetic shape memory alloys, Thin Films, Micro-/Nano-structured magnetic materials, Graphene, Spins in organics, Magnetic imaging, Surface Magnetism, Spin excitations/Torque, Spincaloric transport

MA 52.23: Poster

Friday, March 30, 2012, 11:00–14:00, Poster A

Hall effect studies in ultrathin LSMO/SRO superlattices — •Francis Bern¹, Michael Ziese¹, and Ionela Vrejoiu² — ¹Division of Superconductivity and Magnetism, University of Leipzig, 04103 Leipzig, Germany — ²Max Planck Institute of Microstructure Physics, 06120 Halle, Germany

A variety of ultrathin multilayer films have been produced by pulsed laser deposition. The itinerant ferromagnet SrRuO₃ (SRO) and the double-exchange ferromagnet La_0.7Sr_0.3MnO₃ (LSMO) were grown on SrTiO₃ (STO), both in single layers as well as in superlattices. Characterization by magnetotransport measurements indicate a structural transition due to strain in the ultrathin layers. The complex temperature dependence of the anomalous Hall coefficient suggests changes in the electronic structure and/or a conducting interfacial layer at the LSMO/SRO interface.