Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/131461
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dc.contributor.authorOnur Avci, Can-
dc.contributor.authorGarello, Kevin-
dc.contributor.authorNistor, Corneliu-
dc.contributor.authorGodey, Sylvie-
dc.contributor.authorBallesteros, Belén-
dc.contributor.authorMugarza, Aitor-
dc.contributor.authorMiron, Ioan Mihai-
dc.contributor.authorGambardella, Pietro-
dc.date.accessioned2016-04-26T10:25:31Z-
dc.date.available2016-04-26T10:25:31Z-
dc.date.issued2014-
dc.identifierdoi: 10.1103/PhysRevB.89.214419-
dc.identifierissn: 1098-0121-
dc.identifiere-issn: 1550-235X-
dc.identifier.citationPhysical Review B 89(21): 214419 (2014)-
dc.identifier.urihttp://hdl.handle.net/10261/131461-
dc.descriptionUnder the terms of the Creative Commons Attribution License 3.0 (CC-BY).-- et al.-
dc.description.abstractWe present a comprehensive study of the current-induced spin-orbit torques in perpendicularly magnetized Ta/CoFeB/MgO layers. The samples were annealed in steps up to 300 °C and characterized using x-ray-absorption spectroscopy, transmission electron microscopy, resistivity, and Hall effect measurements. By performing adiabatic harmonic Hall voltage measurements, we show that the transverse (fieldlike) and longitudinal (antidampinglike) spin-orbit torques are composed of constant and magnetization-dependent contributions, both of which vary strongly with annealing. Such variations correlate with changes of the saturation magnetization and magnetic anisotropy and are assigned to chemical and structural modifications of the layers. The relative variation of the constant and anisotropic torque terms as a function of annealing temperature is opposite for the fieldlike and antidamping torques. Measurements of the switching probability using sub-μs current pulses show that the critical current increases with the magnetic anisotropy of the layers, whereas the switching efficiency, measured as the ratio of magnetic anisotropy energy and pulse energy, decreases. The optimal annealing temperature to achieve maximum magnetic anisotropy, saturation magnetization, and switching efficiency is determined to be between 240 and 270°C.-
dc.description.sponsorshipThis work was supported by the the European Commission under the Seventh Framework Programme (GA 318144, SPOT), the European Research Council (StG 203239 NOMAD), the Ministerio de Economía y Competitividad (MAT2010-15659), and the Swiss Competence Centre for Materials Science and Technology (CCMX).-
dc.publisherAmerican Institute of Physics-
dc.relationinfo:eu-repo/grantAgreement/EC/FP7/318144-
dc.relationinfo:eu-repo/grantAgreement/EC/FP7/203239-
dc.relation.isversionofPublisher's version-
dc.rightsopenAccess-
dc.titleFieldlike and antidamping spin-orbit torques in as-grown and annealed Ta/CoFeB/MgO layers-
dc.typeartículo-
dc.identifier.doi10.1103/PhysRevB.89.214419-
dc.relation.publisherversionhttp://dx.doi.org/10.1103/PhysRevB.89.214419-
dc.date.updated2016-04-26T10:25:31Z-
dc.description.versionPeer Reviewed-
dc.language.rfc3066eng-
dc.rights.licensehttp://creativecommons.org/licenses/by/3.0/-
dc.contributor.funderEuropean Commission-
dc.contributor.funderCompetence Centre for Materials Science and Technology (Switzerland)-
dc.contributor.funderMinisterio de Economía y Competitividad (España)-
dc.contributor.funderEuropean Research Council-
dc.relation.csic-
dc.identifier.funderhttp://dx.doi.org/10.13039/501100000780es_ES
dc.identifier.funderhttp://dx.doi.org/10.13039/501100006068es_ES
dc.identifier.funderhttp://dx.doi.org/10.13039/501100003329es_ES
dc.identifier.funderhttp://dx.doi.org/10.13039/501100000781es_ES
item.fulltextWith Fulltext-
item.openairetypeartículo-
item.cerifentitytypePublications-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.grantfulltextopen-
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