Journal
NATURE COMMUNICATIONS
Volume 12, Issue 1, Pages -Publisher
NATURE RESEARCH
DOI: 10.1038/s41467-021-23489-y
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Funding
- project Quantox of QuantERA ERA-NET Cofund in Quantum Technologies [731473]
- project To2Dox of the Flag ERA ERA-NET within the European Union's Horizon 2020 Programme
- Spanish MINECO [MAT2017-87134-C02]
- IDEX Paris-Saclay [ANR-11-IDEX-0003-02]
- ERC [647100]
- French ANR [ANR-15-CE24-0008-01, ANR-17-CE24-0026-03]
- China Scholarship Council
- US Department of Energy (DOE), Office of Science, Basic Energy Sciences, Materials Sciences, and Engineering Division
- Office of Science of the U.S. Department of Energy [DE-AC05-00OR22725]
- NSF (DMR) [1708790]
- DOE Office of Science [DE-AC02-06CH11357]
- U.S. Department of Energy, Office of Science, Basic Energy Sciences, Materials Sciences, and Engineering Division
- Agence Nationale de la Recherche (ANR) [ANR-15-CE24-0008, ANR-17-CE24-0026] Funding Source: Agence Nationale de la Recherche (ANR)
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1708790] Funding Source: National Science Foundation
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The anomalous Hall effect (AHE) in ferromagnets can be caused by intrinsic and extrinsic mechanisms. The interplay between correlated physics and topological phenomena at the interface between a ferromagnet La0.7Sr0.3MnO3 and a semimetallic SrIrO3 results in a large AHE with high anomalous Hall conductivity and Hall angle values.
The anomalous Hall effect (AHE) is an intriguing transport phenomenon occurring typically in ferromagnets as a consequence of broken time reversal symmetry and spin-orbit interaction. It can be caused by two microscopically distinct mechanisms, namely, by skew or side-jump scattering due to chiral features of the disorder scattering, or by an intrinsic contribution directly linked to the topological properties of the Bloch states. Here we show that the AHE can be artificially engineered in materials in which it is originally absent by combining the effects of symmetry breaking, spin orbit interaction and proximity-induced magnetism. In particular, we find a strikingly large AHE that emerges at the interface between a ferromagnetic manganite (La0.7Sr0.3MnO3) and a semimetallic iridate (SrIrO3). It is intrinsic and originates in the proximity-induced magnetism present in the narrow bands of strong spin-orbit coupling material SrIrO3, which yields values of anomalous Hall conductivity and Hall angle as high as those observed in bulk transition-metal ferromagnets. These results demonstrate the interplay between correlated electron physics and topological phenomena at interfaces between 3d ferromagnets and strong spin-orbit coupling 5d oxides and trace an exciting path towards future topological spintronics at oxide interfaces. The anomalous Hall effect (AHE) occurs in ferromagnets caused by intrinsic and extrinsic mechanisms. Here, Yoo et al. report large anomalous Hall conductivity and Hall angle at the interface between a ferromagnet La0.7Sr0.3MnO3 and a semimetallic SrIrO3, due to the interplay between correlated physics and topological phenomena.
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