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Article: Thermally stable magnetic skyrmions in multilayer synthetic antiferromagnetic racetracks

TitleThermally stable magnetic skyrmions in multilayer synthetic antiferromagnetic racetracks
Authors
Issue Date2016
PublisherAmerican Physical Society. The Journal's web site is located at http://journals.aps.org/prb/
Citation
Physical Review B: covering condensed matter and materials physics, 2016, v. 94, p. article no. 064406 How to Cite?
AbstractA magnetic skyrmion is a topological magnetization structure with a nanometric size and a well-defined swirling spin distribution, which is anticipated to be an essential building block for novel skyrmion-based device applications. We study the motion of magnetic skyrmions in multilayer synthetic antiferromagnetic (SAF) racetracks as well as in conventional monolayer ferromagnetic (FM) racetracks at finite temperature. There is an odd-even effect of the constituent FM layer number on the skyrmion Hall effect (SkHE). Namely, due to the suppression of the SkHE, the magnetic skyrmion has no transverse motion in multilayer SAF racetracks packed with even FM layers. It is shown that a moving magnetic skyrmion is stable even at room temperature (T=300 K) in a bilayer SAF racetrack but it is destructed at T=100 K in a monolayer FM racetrack. Our results indicate that the SAF structures are reliable and promising candidates for future applications in skyrmion electronics and skyrmion spintronics.
Persistent Identifierhttp://hdl.handle.net/10722/229390
ISSN
2015 Impact Factor: 3.718

 

DC FieldValueLanguage
dc.contributor.authorZhang, X-
dc.contributor.authorEzawa, M-
dc.contributor.authorZhou, Y-
dc.date.accessioned2016-08-23T14:10:52Z-
dc.date.available2016-08-23T14:10:52Z-
dc.date.issued2016-
dc.identifier.citationPhysical Review B: covering condensed matter and materials physics, 2016, v. 94, p. article no. 064406-
dc.identifier.issn2469-9950-
dc.identifier.urihttp://hdl.handle.net/10722/229390-
dc.description.abstractA magnetic skyrmion is a topological magnetization structure with a nanometric size and a well-defined swirling spin distribution, which is anticipated to be an essential building block for novel skyrmion-based device applications. We study the motion of magnetic skyrmions in multilayer synthetic antiferromagnetic (SAF) racetracks as well as in conventional monolayer ferromagnetic (FM) racetracks at finite temperature. There is an odd-even effect of the constituent FM layer number on the skyrmion Hall effect (SkHE). Namely, due to the suppression of the SkHE, the magnetic skyrmion has no transverse motion in multilayer SAF racetracks packed with even FM layers. It is shown that a moving magnetic skyrmion is stable even at room temperature (T=300 K) in a bilayer SAF racetrack but it is destructed at T=100 K in a monolayer FM racetrack. Our results indicate that the SAF structures are reliable and promising candidates for future applications in skyrmion electronics and skyrmion spintronics.-
dc.languageeng-
dc.publisherAmerican Physical Society. The Journal's web site is located at http://journals.aps.org/prb/-
dc.relation.ispartofPhysical Review B: covering condensed matter and materials physics-
dc.rightsPhysical Review B: covering condensed matter and materials physics. Copyright © American Physical Society.-
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.titleThermally stable magnetic skyrmions in multilayer synthetic antiferromagnetic racetracks-
dc.typeArticle-
dc.identifier.emailZhang, X: xichaozhang@hku.hk-
dc.identifier.emailZhou, Y: yanzhou@hku.hk-
dc.identifier.authorityZhou, Y=rp01541-
dc.description.naturepostprint-
dc.identifier.doi10.1103/PhysRevB.94.064406-
dc.identifier.hkuros261741-
dc.identifier.volume94-
dc.identifier.spagearticle no. 064406-
dc.identifier.epagearticle no. 064406-
dc.publisher.placeUnited States-

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