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Journal Article

Thickness-dependent Ru exchange spring at La0.7Sr0.3MnO3–SrRuO3 interface


Mertig,  Ingrid
Max Planck Institute of Microstructure Physics, Max Planck Society;

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Koch, M., Bergmann, L., Agrestini, S., Maznichenko, I., Mertig, I., Herklotz, A., et al. (2020). Thickness-dependent Ru exchange spring at La0.7Sr0.3MnO3–SrRuO3 interface. Physica Status Solidi B, 257(7): 1900616. doi:10.1002/pssb.201900616.

Cite as: https://hdl.handle.net/21.11116/0000-0008-AA69-3
The conducting oxide ferromagnets SrRuO3 (SRO) and LaSr0.3MnO3 (LSMO) form a Ru exchange spring at a coherent low‐interdiffusion interface grown on TiO2‐terminated SrTiO3(STO)(001) substrates as SRO(d)/LSMO/STO(001) bilayers. Field‐ and temperature‐dependent magnetization data with systematically varied thickness d of SRO from 7 to 18 unit cells (uc) indicate a thickness of 10–14 uc of the exchange spring which governs magnetic switching and causes thickness‐dependent field‐cooling effects. Mn L3 edge X‐ray magnetic circular dichroism (XMCD) data reveal the dominating in‐plane orientation of interfacial spins. In low magnetic fields, noncoplanar, topologically nontrivial spin textures arise and can be switched, driven by the Zeeman energy of the LSMO layer.