Abstract
Epitaxial interfaces combining 3d and 5d transition metal oxides are a fertile playground to examine the interplay between topology and electron correlations. In this paper, we explore magnetism and transport of bilayers combining ferromagnetic La0.7Sr0.3MnO3 and the strong spin-orbit coupling material SrIrO3. We have found an interfacial magnetic proximity effect driving an intrinsic contribution to the anomalous Hall effect of topological origin. The interfacial proximity interaction is enabled by the Mn-O-Ir bonding reconstruction and depends on layer sequence. While bilayers with the La0.7Sr0.3MnO3 on top featuring a robust Mn magnetism at the interface show the intrinsic AHE contribution, it is absent in bilayers with the inverted layer sequence (SrIrO3 layer on top) showing strongly suppressed magnetism at the interface. These results illustrate the leading role of interfacial atomic reconstructions on the interplay between topology and correlations at 3d/5d oxide interfaces. This finding may be of interest in future oxide topological spintronics and spin-orbitronics.
| Original language | English |
|---|---|
| Article number | 124402 |
| Journal | Physical Review Materials |
| Volume | 9 |
| Issue number | 12 |
| DOIs | |
| State | Published - Dec 2025 |
Funding
Work at UCM and Laboratoire Albert Fert was supported by the 2020 research and innovation program under the EIC Pathfinder Grant No. 101130224 JOSEPHINE, and COST action SUPERQUMAP. Work at UCM was supported by Agencia Estatal de Investigacian through Grants No. PID2023-148884OB-I00 and No. 2021 130196B-C21, and by the (MAD2D-CM)-UCM project funded by Comunidad de Madrid, by the Recovery, Transformation and Resilience Plan, and by NextGenerationEU from the European Union. Work at CNRS/Thales supported by French ANR SUPERFAST and SUPERSPIN through the France 2030 government grant PEPR-SPIN ANR-24-EXSP-0012. Work at Bryn Mawr was supported by NSF (Grant No. DMR #1708790). Work by S.G.E.t.V. and S.R. (neutron and x-ray experiments and analysis) was supported by the U.S. Department of Energy, Office of Science, Basic Energy Sciences, Materials Sciences and Engineering Division. This research used resources of the Advanced Photon Source, a U.S. Department of Energy (DOE) Office of Science User Facility operated for the DOE Office of Science by Argonne National Laboratory under Contract No. DE-AC02-06CH11357. This research used resources at the Spallation Neutron Source, a DOE Office of Science User Facility operated by the Oak Ridge National Laboratory.