Center for Correlated Electron Systems

Seminar

Emerging magnetism and anomalous Hall effect in iridate–manganite heterostructures

July 15, 2016l Hit 988
Date : August 11, 2016 16:00 ~ 17:00
Speaker : Ho Nyung Lee(Oak Ridge National Laboratory)
Location : Bldg. 19, Rm. 210

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. In this talk, I will present our observation on the interfacial coupling between the 3d antiferromagnetic insulator SrMnO3 and the 5d paramagnetic metal SrIrO3 that is found to be 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.