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Imprint from ferromagnetic skyrmions in an antiferromagnet via exchange bias

by Gaudin, Gilles , Auffret, Stéphane , Foerster, Michael , Zhang, Qiang , Aballe, Lucia , Juge, Roméo , Kumari, Gaurav Rana , Baltz, Vincent , Bairagi, Kaushik , Pham, Van Tuong , Rafael Lopes Seeger , Belmeguenai, Mohamed , Ruiz-Gómez, Sandra , Boulle, Olivier

in Antiferromagnetism / Bilayers / Dynamic stability / Exchanging / Ferromagnetic materials / Hypothetical particles / Memory devices / Particle theory / Replication / Room temperature / Thin films

2021

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Imprint from ferromagnetic skyrmions in an antiferromagnet via exchange bias

in Antiferromagnetism / Bilayers / Dynamic stability / Exchanging / Ferromagnetic materials / Hypothetical particles / Memory devices / Particle theory / Replication / Room temperature / Thin films

2021

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Imprint from ferromagnetic skyrmions in an antiferromagnet via exchange bias

in Antiferromagnetism / Bilayers / Dynamic stability / Exchanging / Ferromagnetic materials / Hypothetical particles / Memory devices / Particle theory / Replication / Room temperature / Thin films

2021

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Paper

Imprint from ferromagnetic skyrmions in an antiferromagnet via exchange bias

Gaudin, Gilles,

Auffret, Stéphane,

Foerster, Michael,

Zhang, Qiang,

Aballe, Lucia,

Juge, Roméo,

Kumari, Gaurav Rana,

Baltz, Vincent,

Bairagi, Kaushik,

Pham, Van Tuong,

Rafael Lopes Seeger,

Belmeguenai, Mohamed,

Ruiz-Gómez, Sandra,

Boulle, Olivier

2021

Overview

Magnetic skyrmions are topological spin textures holding great potential as nanoscale information carriers. Recently, skyrmions have been predicted in antiferromagnets, with key advantages in terms of stability, size, and dynamical properties over their ferromagnetic analogs. However, their experimental demonstration is still lacking. Here, we show the imprint from ferromagnetic skyrmions into a thin film of an IrMn antiferromagnet, at room temperature and zero external magnetic field, using exchange-bias. Using high-spatial-resolution x-ray magnetic circular dichroism photoemission electron microscopy (XMCD-PEEM), we observed the imprinted spin textures within the IrMn from the XMCD signal of the uncompensated Mn spins at the interface with the ferromagnet. This result opens up a path for logic and memory devices based on skyrmion manipulation in antiferromagnets.

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Publisher

Cornell University Library, arXiv.org

Subject

/ Ferromagnetic materials

/ Hypothetical particles

/ Memory devices