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Wiley, Advanced Electronic Materials, 8(9), 2023

DOI: 10.1002/aelm.202300232

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Observation of the Unidirectional Magnetoresistance in Antiferromagnetic Insulator Fe<sub>2</sub>O<sub>3</sub>/Pt Bilayers

Journal article published in 2023 by Yihong Fan ORCID, Pengxiang Zhang ORCID, Jiahao Han ORCID, Yang Lv ORCID, Luqiao Liu ORCID, Jian‐Ping Wang ORCID
This paper was not found in any repository, but could be made available legally by the author.
This paper was not found in any repository, but could be made available legally by the author.

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Abstract

AbstractUnidirectional magnetoresistance (UMR) has been observed in a variety of stacks with ferromagnetic/spin Hall material bilayer structures. In this work, UMR in antiferromagnetic insulator Fe2O3/Pt structure is reported. The UMR has a negative value, which is related to interfacial Rashba coupling and band splitting. Thickness‐dependent measurement reveals a potential competition between UMR and the unidirectional spin Hall magnetoresistance (USMR). This work reveals the existence of UMR in antiferromagnetic insulators/heavy metal bilayers and broadens the way for the application of antiferromagnet‐based spintronic devices.