Journal article Open Access

Room-temperature stabilization of antiferromagnetic skyrmions in synthetic antiferromagnets

Legrand William; Cros Vincent


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  <identifier identifierType="URL">https://zenodo.org/record/3896370</identifier>
  <creators>
    <creator>
      <creatorName>Legrand William</creatorName>
      <affiliation>Unité Mixte de Physique, CNRS/Thales, Université Paris-Saclay</affiliation>
    </creator>
    <creator>
      <creatorName>Cros Vincent</creatorName>
      <affiliation>Unité Mixte de Physique, CNRS/Thales, Université Paris-Saclay</affiliation>
    </creator>
  </creators>
  <titles>
    <title>Room-temperature stabilization of antiferromagnetic skyrmions in synthetic antiferromagnets</title>
  </titles>
  <publisher>Zenodo</publisher>
  <publicationYear>2020</publicationYear>
  <subjects>
    <subject>skyrmions; topological textures; spintronics</subject>
  </subjects>
  <dates>
    <date dateType="Issued">2020-06-16</date>
  </dates>
  <resourceType resourceTypeGeneral="Text">Journal article</resourceType>
  <alternateIdentifiers>
    <alternateIdentifier alternateIdentifierType="url">https://zenodo.org/record/3896370</alternateIdentifier>
  </alternateIdentifiers>
  <relatedIdentifiers>
    <relatedIdentifier relatedIdentifierType="DOI" relationType="IsSupplementedBy" resourceTypeGeneral="Text">10.1038/s41563-019-0468-3</relatedIdentifier>
    <relatedIdentifier relatedIdentifierType="DOI" relationType="IsIdenticalTo">10.1038/s41563-019-0468-3</relatedIdentifier>
  </relatedIdentifiers>
  <rightsList>
    <rights rightsURI="https://creativecommons.org/licenses/by/4.0/legalcode">Creative Commons Attribution 4.0 International</rights>
    <rights rightsURI="info:eu-repo/semantics/openAccess">Open Access</rights>
  </rightsList>
  <descriptions>
    <description descriptionType="Abstract">&lt;p&gt;Room-temperature skyrmions in ferromagnetic films and multilayers show promise for encoding information bits in new computing technologies. Despite recent progress, ferromagnetic order generates dipolar&lt;br&gt;
fields that prevent ultrasmall skyrmion sizes, and allows a transverse deflection of moving skyrmions that&lt;br&gt;
hinders their efficient manipulation. Antiferromagnetic skyrmions shall lift these limitations. Here we&lt;br&gt;
demonstrate that room-temperature antiferromagnetic skyrmions can be stabilized in synthetic antiferromagnets (SAFs), in which perpendicular magnetic anisotropy (PMA), antiferromagnetic coupling and chiral&lt;br&gt;
order can be adjusted concurrently. Utilizing interlayer electronic coupling to an adjacent bias layer (BL),&lt;br&gt;
we demonstrate that spin-spiral states obtained in a SAF with vanishing PMA can be turned into isolated antiferromagnetic skyrmions. We also provide model-based estimates of skyrmion size and stability,&lt;br&gt;
showing that room-temperature antiferromagnetic skyrmions below 10 nm in radius can be anticipated in&lt;br&gt;
further optimized SAFs. Antiferromagnetic skyrmions in SAFs may thus solve major issues associated with&lt;br&gt;
ferromagnetic skyrmions for low-power spintronic devices.&lt;br&gt;
&amp;nbsp;&lt;/p&gt;</description>
  </descriptions>
  <fundingReferences>
    <fundingReference>
      <funderName>European Commission</funderName>
      <funderIdentifier funderIdentifierType="Crossref Funder ID">10.13039/501100000780</funderIdentifier>
      <awardNumber awardURI="info:eu-repo/grantAgreement/EC/H2020/824123/">824123</awardNumber>
      <awardTitle>Skyrmion-Topological insulator and Weyl semimetal technology</awardTitle>
    </fundingReference>
    <fundingReference>
      <funderName>European Commission</funderName>
      <funderIdentifier funderIdentifierType="Crossref Funder ID">10.13039/501100000780</funderIdentifier>
      <awardNumber awardURI="info:eu-repo/grantAgreement/EC/H2020/665095/">665095</awardNumber>
      <awardTitle>Magnetic Skyrmions for Future Nanospintronic Devices</awardTitle>
    </fundingReference>
  </fundingReferences>
</resource>
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