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Manipulating topological Hall-like signatures by interface engineering in epitaxial ruthenate/manganite heterostructures

Year: 2023
Type: article
Abstract: (SRO/LCMO) bilayers. Our investigation suggests that pure SRO has hard and soft magnetic characteristics but the anomalous Hall effect (AHE) in SRO is governed by the high coercivity phase. We have shown that the proximity effect of a soft magnetic LCMO on SRO plays a critical role in interfacial magnetic coupling and transport properties in SRO. Upon reducing the SRO thickness in the bilayer, the proximity effect becomes the dominant feature, enhancing the magnitude and temperature range of THE-like signatures. The THE-like features in bilayers can be explained by a diffusive Berry phase transition model in the presence of an emergent magnetic state due to interface coupling. This work provides an alternative understanding of THE-like signatures and their manipulation in SRO-based heterostructures, bilayers and superlattices.
Source: Nanoscale
DOI: 10.1039/d3nr02407e
Authors: Pinku Roy, Di Zhang, Alessandro R. Mazza, Nicholas Cucciniello, Sundar Kunwar, Hao Zeng, Aiping Chen, Quanxi Jia
Language: English
Open Access status: green
Funders: National Science Foundation, U.S. Department of Energy, Center for Integrated Nanotechnologies, Glenn T. Seaborg Institute, Office of Science, National Nuclear Security Administration, University at Buffalo, Division of Electrical, Communications and Cyber Systems, Los Alamos National Laboratory
Awards: G1017065088, G1279347439, G1527848044, Collaborative Research: ECCS-EPSRC: Development of uniform, low power, high density resistive memory by vertical interface and defect design, G3918011870, G6325156902, G6410514744, G70659677, G7977574923
OpenAlex ID: W4387531037
FWCI: 0.556
Cites: 66
Cited by: 6
Related to: 10