Physical Review Materials 9 124402(2025)

Authors: Andrea Peralta-Somoza, Myoung Woo-Yoo, Sandra Lopez, José María Gonzalez-Calbet, Javier Tornos, Rafael Fuster, Alberto Rivera, Federico Mompeán, Mariona Cabero, Mar García-Hernández, Timothy R. Charlton, Brian J. Kirby, Stephan Rosenkranz, Daniel Haskel, Yongseong Choi, Joerg Strempfer, Xiao Wang, Zouhair Sefrioui, Carlos León, Javier E. Villegas, Suzanne G. E. te Velthuis, and Jacobo Santamaría

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.

DOI: 10.1103/qxn3-5327