Writing and reading antiferromagnetic Mn2Au by Néel spin-orbit torques and large anisotropic magnetoresistance

Bodnar, S. Yu.; �mejkal, L.; Turek, I.; Jungwirth, T.; Gomonay, O.; Sinova, J.; Sapozhnik, A. A.; Elmers, H.-J.; Kl�ui, M.; Jourdan, M.

Abstract

Using antiferromagnets as active elements in spintronics requires the ability to manipulate and read-out the Néel vector orientation. Here we demonstrate for Mn2Au, a good conductor with a high ordering temperature suitable for applications, reproducible switching using current pulse generated bulk spin-orbit torques and read-out by magnetoresistance measurements. Reversible and consistent changes of the longitudinal resistance and planar Hall voltage of star-patterned epitaxial Mn2Au(001) thin films were generated by pulse current densities of ≃107 A/cm2. The symmetry of the torques agrees with theoretical predictions and a large read-out magnetoresistance effect of more than ≃6% is reproduced by ab initio transport calculations.

• Journal Article Type: Article
• Acceptance Date: Dec 26, 2017
• Online Publication Date: Jan 24, 2018
• Publication Date: 2018-12
• Deposit Date: Feb 27, 2020
• Publicly Available Date: Feb 27, 2020
• Journal: Nature Communications
• Electronic ISSN: 2041-1723
• Publisher: Nature Publishing Group
• Peer Reviewed: Peer Reviewed
• Volume: 9
• Issue: 1
• Article Number: 348
• DOI: https://doi.org/10.1038/s41467-017-02780-x
• Keywords: General Biochemistry, Genetics and Molecular Biology; General Physics and Astronomy; General Chemistry
• Public URL: https://nottingham-repository.worktribe.com/output/4045056
• Publisher URL: https://www.nature.com/articles/s41467-017-02780-x