Current-driven magnetization switching under zero field in Pt/Ta(wedge)/CoFeB/MgO multilayers

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dc.authoridYu, Guoqiang/0000-0002-7439-6920
dc.authoridWong, Kin/0000-0001-6776-3852
dc.authoridWang, Kang/0000-0002-9363-1279
dc.contributor.authorAkyol, Mustafa
dc.contributor.authorYu, Guoqiang
dc.contributor.authorWong, Kin
dc.contributor.authorWang, Kang L.
dc.date.accessioned2025-01-06T17:45:20Z
dc.date.available2025-01-06T17:45:20Z
dc.date.issued2022
dc.description.abstractThe switching of perpendicularly magnetized ferromagnets via current-induced spin-orbit torques is of great interest because of its potential applications in memory and logic devices. However, the in-plane electric current itself is not enough to switch the magnetization. In addition to the electric current, an in-plane external magnetic field is required for magnetization switching. This limits the usage of such devices in spintronic applications. Here, we work on the current-driven perpendicular magnetization switching in the Pt/Ta(wedge)/CoFeB/MgO multilayer. The structural symmetry is broken in both z-axis and in-plane due to the wedge Ta layer, which results in a field-like spin-orbit torque. The beta( z )value extracted from the slope of the offset field vs current density increases with Ta layer thickness (< 1.0 nm) and then decreases up to z-axis asymmetries that enable the current-driven magnetization switching without the need for a magnetic field. We showed switching of the magnetization with a perpendicular magnetic anisotropy, switching in a wide range of Ta layer in Pt/Ta(wedge)/CoFeB/MgO multilayer. Published under an exclusive license by AIP Publishing.
dc.description.sponsorshipAdana Alparslan Tuerkes Science and Technology University Scientific Research Council [19103008]
dc.description.sponsorshipThis work was supported by the Adana Alparslan Tuerkes Science and Technology University Scientific Research Council under Project No. 19103008.
dc.identifier.doi10.1063/5.0104427
dc.identifier.issn0003-6951
dc.identifier.issn1077-3118
dc.identifier.issue11
dc.identifier.scopus2-s2.0-85138230389
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1063/5.0104427
dc.identifier.urihttps://hdl.handle.net/20.500.14669/3378
dc.identifier.volume121
dc.identifier.wosWOS:000874804000002
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherAip Publishing
dc.relation.ispartofApplied Physics Letters
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_20241211
dc.titleCurrent-driven magnetization switching under zero field in Pt/Ta(wedge)/CoFeB/MgO multilayers
dc.typeArticle

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