AI Article Synopsis
- Strong Coulomb repulsion and spin-orbit coupling cause unique physical effects in transition metal oxides, especially in complex oxide superlattices.
- Research on 3d and 5d oxide systems has shown that their combined strong interactions can lead to significant changes in properties, despite initial studies showing only minor differences from bulk materials.
- The study reveals that the interface between the 3d antiferromagnetic insulator SrMnO3 and the 5d paramagnetic metal SrIrO3 exhibits strong coupling, resulting in an anomalous Hall effect due to charge transfer-induced interfacial ferromagnetism, highlighting potential for new technologies.
Article Abstract
Strong Coulomb repulsion and spin-orbit coupling are known to give rise to exotic physical phenomena in transition metal oxides. Initial attempts to investigate systems, where both of these fundamental interactions are comparably strong, such as 3d and 5d complex oxide superlattices, have revealed properties that only slightly differ from the bulk ones of the constituent materials. Here we observe that the interfacial coupling between the 3d antiferromagnetic insulator SrMnO3 and the 5d paramagnetic metal SrIrO3 is enormously strong, yielding an anomalous Hall response as the result of charge transfer driven interfacial ferromagnetism. These findings show that low dimensional spin-orbit entangled 3d-5d interfaces provide an avenue to uncover technologically relevant physical phenomena unattainable in bulk materials.
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Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5025866 | PMC |
| http://dx.doi.org/10.1038/ncomms12721 | DOI Listing |
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