Emerging magnetism and anomalous Hall effect in iridate–manganite heterostructures

John Nichols, Xiang Gao, Shinbuhm Lee, Tricia L. Meyer, John W. Freeland, Valeria Lauter, Di Yi, Jian Liu, Daniel Haskel, Jonathan R. Petrie, Er-Jia Guo, Andreas Herklotz, Dongkyu Lee, Thomas Z. Ward, Gyula Eres, Michael R. Fitzsimmons and Ho Nyung Lee ()
Additional contact information
John Nichols: Oak Ridge National Laboratory
Xiang Gao: Oak Ridge National Laboratory
Shinbuhm Lee: Oak Ridge National Laboratory
Tricia L. Meyer: Oak Ridge National Laboratory
John W. Freeland: Advanced Photon Source, Argonne National Laboratory
Valeria Lauter: Oak Ridge National Laboratory
Di Yi: Stanford University
Jian Liu: University of Tennessee
Daniel Haskel: Advanced Photon Source, Argonne National Laboratory
Jonathan R. Petrie: Oak Ridge National Laboratory
Er-Jia Guo: Oak Ridge National Laboratory
Andreas Herklotz: Oak Ridge National Laboratory
Dongkyu Lee: Oak Ridge National Laboratory
Thomas Z. Ward: Oak Ridge National Laboratory
Gyula Eres: Oak Ridge National Laboratory
Michael R. Fitzsimmons: Oak Ridge National Laboratory
Ho Nyung Lee: Oak Ridge National Laboratory

Nature Communications, 2016, vol. 7, issue 1, 1-6

Abstract: 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.

Date: 2016
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DOI: 10.1038/ncomms12721

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