Journal article Open Access

Room-temperature stabilization of antiferromagnetic skyrmions in synthetic antiferromagnets

Legrand William; Cros Vincent


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    "description": "<p>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<br>\nfields that prevent ultrasmall skyrmion sizes, and allows a transverse deflection of moving skyrmions that<br>\nhinders their efficient manipulation. Antiferromagnetic skyrmions shall lift these limitations. Here we<br>\ndemonstrate that room-temperature antiferromagnetic skyrmions can be stabilized in synthetic antiferromagnets (SAFs), in which perpendicular magnetic anisotropy (PMA), antiferromagnetic coupling and chiral<br>\norder can be adjusted concurrently. Utilizing interlayer electronic coupling to an adjacent bias layer (BL),<br>\nwe 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,<br>\nshowing that room-temperature antiferromagnetic skyrmions below 10 nm in radius can be anticipated in<br>\nfurther optimized SAFs. Antiferromagnetic skyrmions in SAFs may thus solve major issues associated with<br>\nferromagnetic skyrmions for low-power spintronic devices.<br>\n&nbsp;</p>", 
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    "title": "Room-temperature stabilization of antiferromagnetic skyrmions in synthetic antiferromagnets", 
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        "title": "Skyrmion-Topological insulator and Weyl semimetal technology", 
        "acronym": "SKYTOP", 
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        "code": "665095", 
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        "title": "Magnetic Skyrmions for Future Nanospintronic Devices", 
        "acronym": "MAGicSky", 
        "program": "H2020", 
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          "doi": "10.13039/501100000780", 
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    "keywords": [
      "skyrmions; topological textures; spintronics"
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    "publication_date": "2020-06-16", 
    "creators": [
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        "affiliation": "Unit\u00e9 Mixte de Physique, CNRS/Thales, Universit\u00e9 Paris-Saclay", 
        "name": "Legrand William"
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        "affiliation": "Unit\u00e9 Mixte de Physique, CNRS/Thales, Universit\u00e9 Paris-Saclay", 
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