Berlin 2024 – scientific programme

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MA: Fachverband Magnetismus

MA 46: Poster II

MA 46.1: Poster

Thursday, March 21, 2024, 15:00–18:00, Poster C

Interface driven emergent electromagnetic induction in SrRuO₃/SrIrO₃-bilayers — •Ludwig Scheuchenpflug¹, Robert Gruhl¹, Sebastian Esser², and Philipp Gegenwart¹ — ¹Experimentalphysik VI, Universität Augsburg, Germany — ²Department of Applied Physics, University of Tokyo, Japan

Recently, emergent electromagnetic induction (EEMI), induced through current driven spin dynamics, was predicted [1] and later observed in the spin-helix magnet Gd₃Ru₄Al₁₂ [2] opening a new direction for material research and paving the way towards further miniaturisation of elements for electrical circuits.

Bilayers of ferromagnetic SrRuO₃ and paramagnetic SrIrO₃ display a topological Hall effect (THE) which was related to the formation of Néel-skyrmions arising from the Dzyaloshinskii-Moriya interaction at the interface [3,4]. Such skyrmions could also show the EEMI effect. We fabricated bilayers of SrRuO₃/SrIrO₃ on SrTiO₃ (001) substrates by metal-organic aerosol deposition and confirmed their quality with X-ray diffraction and TEM imaging. Besides Hall measurements, precise impedance measurements are analyzed at several temperatures and frequencies on a variety of microstructured samples.

[1] N. Nagaosa, Jpn. J. Appl. Phys. 58, 120909 (2019).

[2] Yokouchi et al., Nature 586, s41586-020-2775-x (2020).

[3] J. Matsuno et al., Science Adv. 2, e1600304 (2016).

[4] S. Esser et al., Phys. Rev. B 103, 214430 (2021).

Keywords: Skyrmions; emergent electromagnetic induction; transition metal oxides; heterostructures; perovskites