Effect of heavy metal layer thickness on spin-orbit torque and current-induced switching in Hf¦CoFeB¦MgO structures

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dc.authoridAkyol, Mustafa/0000-0001-8584-0620
dc.authoridGunes, Mustafa/0000-0002-7974-0540
dc.authoridEkicibil, Ahmet/0000-0003-3071-0444
dc.authoridKhalili Amiri, Pedram/0000-0002-1539-1521
dc.authoridYu, Guoqiang/0000-0002-7439-6920
dc.contributor.authorAkyol, Mustafa
dc.contributor.authorJiang, Wanjun
dc.contributor.authorYu, Guoqiang
dc.contributor.authorFan, Yabin
dc.contributor.authorGunes, Mustafa
dc.contributor.authorEkicibil, Ahmet
dc.contributor.authorAmiri, Pedram Khalili
dc.date.accessioned2025-01-06T17:44:55Z
dc.date.available2025-01-06T17:44:55Z
dc.date.issued2016
dc.description.abstractWe study the heavy metal layer thickness dependence of the current-induced spin-orbit torque (SOT) in perpendicularly magnetized Hf broken vertical bar CoFeB broken vertical bar MgO multilayer structures. The damping-like (DL) current-induced SOT is determined by vector anomalous Hall effect measurements. A non-monotonic behavior in the DL-SOT is found as a function of the thickness of the heavy-metal layer. The sign of the DL-SOT changes with increasing the thickness of the Hf layer in the trilayer structure. As a result, in the current-driven magnetization switching, the preferred direction of switching for a given current direction changes when the Hf thickness is increased above similar to 7 nm. Although there might be a couple of reasons for this unexpected behavior in DL-SOT, such as the roughness in the interfaces and/or impurity based electric potential in the heavy metal, one can deduce a roughness dependence sign reversal in DL-SOT in our trilayer structure. Published by AIP Publishing.
dc.description.sponsorshipNSF Nanosystems Engineering Research Center for Translational Applications of Nanoscale Multiferroic Systems (TANMS); FAME Center, one of six centers of STARnet, a Semiconductor Research Corporation (SRC) program - MARCO; DARPA; TUBITAK The Scientific and Technological Research Council of Turkey; Cukurova University (Adana/Turkey) [FEF2013D31]
dc.description.sponsorshipThis work was partially supported by the NSF Nanosystems Engineering Research Center for Translational Applications of Nanoscale Multiferroic Systems (TANMS). This work was also supported in part by the FAME Center, one of six centers of STARnet, a Semiconductor Research Corporation (SRC) program sponsored by MARCO and DARPA. We would further like to acknowledge the collaboration of this research with the King Abdul-Aziz City for Science and Technology (KACST) via The Center of Excellence for Green Nanotechnologies (CEGN). M.A. would like to acknowledge TUBITAK The Scientific and Technological Research Council of Turkey for his financial support during this work. This work was also partially supported by Cukurova University (Adana/Turkey) under the Project No. of 2013, FEF2013D31.
dc.identifier.doi10.1063/1.4958295
dc.identifier.issn0003-6951
dc.identifier.issn1077-3118
dc.identifier.issue2
dc.identifier.scopus2-s2.0-84978414598
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1063/1.4958295
dc.identifier.urihttps://hdl.handle.net/20.500.14669/3248
dc.identifier.volume109
dc.identifier.wosWOS:000381155200037
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherAmer Inst Physics
dc.relation.ispartofApplied Physics Letters
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_20241211
dc.subjectDrıven
dc.titleEffect of heavy metal layer thickness on spin-orbit torque and current-induced switching in Hf¦CoFeB¦MgO structures
dc.typeArticle

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