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

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.

SUBMITTER: Bodnar SY

PROVIDER: S-EPMC5783935 | biostudies-literature | 2018 Jan

REPOSITORIES: biostudies-literature

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

Bodnar S Yu SY Šmejkal L L Turek I I Jungwirth T T Gomonay O O Sinova J J Sapozhnik A A AA Elmers H-J HJ Kläui M M Jourdan M M

Nature communications 20180124 1

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 Mn<su ...[more]

PMID: 29367633

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