dc.contributor.author | Burgos-Parra, E | |
dc.contributor.author | Bukin, N | |
dc.contributor.author | Sani, S | |
dc.contributor.author | Figueroa, AI | |
dc.contributor.author | Beutier, G | |
dc.contributor.author | Dupraz, M | |
dc.contributor.author | Chung, S | |
dc.contributor.author | Dürrenfeld, P | |
dc.contributor.author | Le, QT | |
dc.contributor.author | Mohseni, SM | |
dc.contributor.author | Houshang, A | |
dc.contributor.author | Cavill, SA | |
dc.contributor.author | Hicken, RJ | |
dc.contributor.author | Åkerman, J | |
dc.contributor.author | van der Laan, G | |
dc.contributor.author | Ogrin, FY | |
dc.date.accessioned | 2019-03-13T16:26:07Z | |
dc.date.issued | 2018-12-01 | |
dc.description.abstract | A dissipative magnetic soliton, or magnetic droplet, is a structure that has been predicted to exist within a thin magnetic layer when non-linearity is balanced by dispersion, and a driving force counteracts the inherent damping of the spin precession. Such a soliton can be formed beneath a nano-contact (NC) that delivers a large spin-polarized current density into a magnetic layer with perpendicular magnetic anisotropy. Although the existence of droplets has been confirmed from electrical measurements and by micromagnetic simulations, only a few attempts have been made to directly observe the magnetic landscape that sustains these structures, and then only for a restricted set of experimental parameter values. In this work we use and x-ray holography technique HERALDO, to image the magnetic structure of the [Co/Ni]x4 multilayer within a NC orthogonal pseudo spin-valve, for different range of magnetic fields and injected electric currents. The magnetic configuration imaged at −33 mA and 0.3 T for devices with 90 nm NC diameter reveals a structure that is within the range of current where the droplet soliton exist based on our electrical measurements and have it is consistent with the expected size of the droplet (∼100 nm diameter) and its spatial position within the sample. We also report the magnetisation configurations observed at lower DC currents in the presence of fields (0–50 mT), where it is expected to observe regimes of the unstable droplet formation. | en_GB |
dc.description.sponsorship | Engineering and Physical Sciences Research Council (EPSRC) | en_GB |
dc.description.sponsorship | EPSRC Centre for Doctoral Training in Metamaterials | en_GB |
dc.identifier.citation | Published online 1 August 2018 | en_GB |
dc.identifier.doi | 10.1038/s41598-018-29856-y | |
dc.identifier.grantnumber | EP/M001016/1 | en_GB |
dc.identifier.grantnumber | EP/L015331/1 | en_GB |
dc.identifier.uri | http://hdl.handle.net/10871/36450 | |
dc.language.iso | en | en_GB |
dc.publisher | Nature Research | en_GB |
dc.rights | © The Author(s). Open Access. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. | en_GB |
dc.subject | x-ray holography | en_GB |
dc.title | Investigation of magnetic droplet solitons using x-ray holography with extended references | en_GB |
dc.type | Article | en_GB |
dc.date.available | 2019-03-13T16:26:07Z | |
dc.description | This is the final version. Available from Nature research via the DOI in this record. | en_GB |
dc.identifier.journal | Scientific Reports | en_GB |
dc.rights.uri | http://www.rioxx.net/licenses/all-rights-reserved | en_GB |
dcterms.dateAccepted | 2018-07-13 | |
exeter.funder | ::Engineering and Physical Sciences Research Council (EPSRC) | en_GB |
exeter.funder | ::Engineering and Physical Sciences Research Council (EPSRC) | en_GB |
rioxxterms.version | VoR | en_GB |
rioxxterms.licenseref.startdate | 2018-12-01 | |
rioxxterms.type | Journal Article/Review | en_GB |
refterms.dateFCD | 2019-03-13T16:21:46Z | |
refterms.versionFCD | VoR | |
refterms.dateFOA | 2019-03-13T16:26:09Z | |
refterms.panel | B | en_GB |
refterms.depositException | publishedGoldOA | |