Titel
Dipolar-stabilized first and second-order antiskyrmions in ferrimagnetic multilayers
Autor*in
Michael Heigl
Institute of Physics, University of Augsburg
Autor*in
Marek Vaňatka
CEITEC BUT, Brno University of Technology
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Abstract
Skyrmions and antiskyrmions are topologically protected spin structures with opposite vorticities. Particularly in coexisting phases, these two types of magnetic quasi-particles may show fascinating physics and potential for spintronic devices. While skyrmions are observed in a wide range of materials, until now antiskyrmions were exclusive to materials with D2d symmetry. In this work, we show first and second-order antiskyrmions stabilized by magnetic dipole–dipole interaction in Fe/Gd-based multilayers. We modify the magnetic properties of the multilayers by Ir insertion layers. Using Lorentz transmission electron microscopy imaging, we observe coexisting antiskyrmions, Bloch skyrmions, and type-2 bubbles and determine the range of material properties and magnetic fields where the different spin objects form and dissipate. We perform micromagnetic simulations to obtain more insight into the studied system and conclude that the reduction of saturation magnetization and uniaxial magnetic anisotropy leads to the existence of this zoo of different spin objects and that they are primarily stabilized by dipolar interaction.
Stichwort
FerromagnetismMagnetic properties and materialsSpintronics
Objekt-Typ
Sprache
Englisch [eng]
Persistent identifier
Erschienen in
Titel
Nature Communications
Band
12
ISSN
2041-1723
Erscheinungsdatum
2021
Publication
Springer Science and Business Media LLC
Projekt
Kod / Identifikator
I-4917
Erscheinungsdatum
2021
Zugänglichkeit
Rechteangabe
© The Author(s) 2021

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