Spin-orbit torque switching of an antiferromagnetic metallic heterostructure

Samik DuttaGupta; A. Kurenkov; Oleg A. Tretiakov; G. Krishnaswamy; G. Sala; V. Krizakova; F. Maccherozzi; S. S. Dhesi; P. Gambardella; S. Fukami; H. Ohno

doi:10.1038/s41467-020-19511-4

Spin-orbit torque switching of an antiferromagnetic metallic heterostructure

Samik DuttaGupta, A. Kurenkov, Oleg A. Tretiakov, G. Krishnaswamy, G. Sala, V. Krizakova, F. Maccherozzi, S. S. Dhesi, P. Gambardella, S. Fukami, H. Ohno

Research output: Contribution to journal › Article › peer-review

Abstract

The ability to represent information using an antiferromagnetic material is attractive for future antiferromagnetic spintronic devices. Previous studies have focussed on the utilization of antiferromagnetic materials with biaxial magnetic anisotropy for electrical manipulation. A practical realization of these antiferromagnetic devices is limited by the requirement of material-specific constraints. Here, we demonstrate current-induced switching in a polycrystalline PtMn/Pt metallic heterostructure. A comparison of electrical transport measurements in PtMn with and without the Pt layer, corroborated by x-ray imaging, reveals reversible switching of the thermally-stable antiferromagnetic Néel vector by spin-orbit torques. The presented results demonstrate the potential of polycrystalline metals for antiferromagnetic spintronics.

Original language	English
Article number	5715
Journal	Nature communications
Volume	11
Issue number	1
DOIs	https://doi.org/10.1038/s41467-020-19511-4
Publication status	Published - 2020 Dec

ASJC Scopus subject areas

Chemistry(all)
Biochemistry, Genetics and Molecular Biology(all)
Physics and Astronomy(all)

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Spin-orbit torque switching of an antiferromagnetic metallic heterostructure. / DuttaGupta, Samik; Kurenkov, A.; Tretiakov, Oleg A.; Krishnaswamy, G.; Sala, G.; Krizakova, V.; Maccherozzi, F.; Dhesi, S. S.; Gambardella, P.; Fukami, S.; Ohno, H.

In: Nature communications, Vol. 11, No. 1, 5715, 12.2020.

Research output: Contribution to journal › Article › peer-review

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abstract = "The ability to represent information using an antiferromagnetic material is attractive for future antiferromagnetic spintronic devices. Previous studies have focussed on the utilization of antiferromagnetic materials with biaxial magnetic anisotropy for electrical manipulation. A practical realization of these antiferromagnetic devices is limited by the requirement of material-specific constraints. Here, we demonstrate current-induced switching in a polycrystalline PtMn/Pt metallic heterostructure. A comparison of electrical transport measurements in PtMn with and without the Pt layer, corroborated by x-ray imaging, reveals reversible switching of the thermally-stable antiferromagnetic N{\'e}el vector by spin-orbit torques. The presented results demonstrate the potential of polycrystalline metals for antiferromagnetic spintronics.",

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note = "Funding Information: We thank C. Igarashi, T. Hirata, H. Iwanuma, and K. Goto for their technical support and Dr. J. Llandro for discussions. A portion of this work was supported by the JSPS KAKENHI 17H06511, 18KK0143, 19H05622, and Cooperative Research Projects of RIEC. O.A.T. acknowledges support by the Australian Research Council (Grant No. DP200101027), the Cooperative Research Project Program at the Research Institute of Electrical Communication, Tohoku University, and by the NCMAS 2020 grant. G.K., G.S., and P.G. acknowledge funding from the Swiss National Science Foundation (Grant No. 200020-172775). V.K. was supported by a Swiss Government Excellence Scholarship.",

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AU - Ohno, H.

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