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dc.contributor.authorZhang, Senfu
dc.contributor.authorZhang, Junwei
dc.contributor.authorWen, Yan
dc.contributor.authorChudnovsky, Eugene M.
dc.contributor.authorZhang, Xixiang
dc.date.accessioned2019-01-08T05:34:02Z
dc.date.available2019-01-08T05:34:02Z
dc.date.issued2018-07-17
dc.identifier.citationZhang S, Zhang J, Wen Y, Chudnovsky EM, Zhang X (2018) Determination of chirality and density control of Néel-type skyrmions with in-plane magnetic field. Communications Physics 1. Available: http://dx.doi.org/10.1038/s42005-018-0040-5.
dc.identifier.issn2399-3650
dc.identifier.doi10.1038/s42005-018-0040-5
dc.identifier.urihttp://hdl.handle.net/10754/630745
dc.description.abstractMagnetic skyrmions are topologically protected nanoscale spin textures exhibiting fascinating physical behaviors. Recent observations of room temperature Néel-type skyrmions in magnetic multilayer films are an important step towards their use in ultra-low power devices. Here, we investigate the magnetization reversal in [Pt/Co/Ta]n multilayer samples under a tilted magnetic field using in-situ Lorentz transmission electron microscopy. On decreasing the magnetic field, individual skyrmions appear to subsequently evolve into snake-like structures growing in the direction opposite to the in-plane magnetic field. We show that this unusual relation between the velocity vector and the magnetic field is dominated by the chirality of the Néel-type skyrmions. It allows one to extract the sign of the Dzyaloshinskii–Moriya constant. We also demonstrate that high concentration of skyrmions can be achieved on increasing the in-plane component of the field or increasing the disorder of the film. Our micromagnetic simulations agree with our experimental results.
dc.description.sponsorshipThis publication is based on research supported by the King Abdullah University of Science and Technology (KAUST), Office of Sponsored Research (OSR) and under the Award No. OSR-2016-CRG5-2977.
dc.publisherSpringer Nature
dc.rightsThe final publication is available at Springer via http://dx.doi.org/10.1038/s42005-018-0040-5
dc.titleDetermination of chirality and density control of Néel-type skyrmions with in-plane magnetic field
dc.typeArticle
dc.contributor.departmentMaterial Science and Engineering Program
dc.contributor.departmentPhysical Science and Engineering (PSE) Division
dc.identifier.journalCommunications Physics
dc.eprint.versionPublisher's Version/PDF
dc.contributor.institutionPhysics Department, Lehman College and Graduate School, The City University of New York, 250 Bedford Park Boulevard West, Bronx, NY, 10468-1589, USA \nEugene M. Chudnovsky
kaust.personZhang, Senfu
kaust.personZhang, Junwei
kaust.personWen, Yan
kaust.personZhang, Xixiang
refterms.dateFOA2020-06-29T13:56:03Z
dc.date.published-online2018-07-17
dc.date.published-print2018-12


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