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arXiv · 1904.03541

Anomalous Hall effect in antiferromagnetic/non-magnetic interfaces

Marco Asa·Carmine Autieri·Riccardo Pazzocco·Christian Rinaldi·Wojciech Brzezicki·Alessandro Stroppa·Mario Cuoco·Silvia Picozzi·M. Cantoni
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Abstract

We report a combined theoretical and experimental investigation of magnetic proximity and Hall transport in Pt/Cr bilayers. Density functional theory indicates that an interfacial magnetization can be induced in the Pt layer and a strong magnetocrystalline anisotropy with an easy axis out of plane arises in the antiferromagnet. A signal ascribed to the anomalous Hall effect is detected and associated to the interface between Pt and Cr layers. We show that this effect originates from the combination of proximity-induced magnetization and a nontrivial topology of the band structure at the interface.

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Marco Asa, Carmine Autieri, Riccardo Pazzocco, Christian Rinaldi, Wojciech Brzezicki, Alessandro Stroppa, Mario Cuoco, Silvia Picozzi, M. Cantoni. 2019-04-06. Anomalous Hall effect in antiferromagnetic/non-magnetic interfaces. https://doi.org/10.1103/physrevresearch.2.043394

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