Berlin 2018 – scientific programme

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TT: Fachverband Tiefe Temperaturen

TT 72: Poster Session: Correlated Electrons

TT 72.61: Poster

Wednesday, March 14, 2018, 15:00–19:00, Poster B

Interface-driven Skyrmions in SrRuO₃ based heterostructures — •Sven Esser¹, Sebastian Esser¹, Anton Jesche¹, Vladimir Roddatis², and Philipp Gegenwart¹ — ¹Experimentalphysik VI, Universität Augsburg, 86159 Augsburg, Germany — ²Institut für Materialphysik, Georg-August-Universität Göttingen, 37077 Göttingen, Germany

Formation of Néel-type skyrmions at oxide interfaces is supported by Dzyaloshinskii-Moriya (DM) interaction through introducing a break of inversion symmetry. Recently artificial perovskite bilayers of the ferromagnetic metal SrRuO₃ (SRO) and spin-orbit semimetal SrIrO₃ (SIO) have been proposed to host two-dimensional Néel-type skyrmions [1].

By using a metal-organic aerosol deposition technique we have grown [(SrIrO₃)₂/(SrRuO₃)₅]_k bilayers with k=1,5,10 repetitions on cubic (001)-oriented SrTiO₃ substrate to investigate the interface induced changes of the electronic and magnetic properties. The fully epitaxially strained state of the thin films was verified by X-ray diffraction patterns in combination with reciprocal space mapping and TEM images. Measurement of the in-plane magnetization indicate a relation to the number of interfaces between SRO and SIO layers. A contribution of the topological Hall effect to the Hall resistance can be observed near 80K, which may be a hint for the formation of skyrmions.
J. Matsuno et al., Science Adv. 2 (2016) e1600304.