Critical switching current of a perpendicular magnetic tunnel junction owing to the interplay of spin-transfer torque and spin-orbit torque

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dc.contributor.authorKang, Doo Hyungko
dc.contributor.authorByun, Ji-Hunko
dc.contributor.authorShin, Mincheolko
dc.date.accessioned2021-08-25T01:30:05Z-
dc.date.available2021-08-25T01:30:05Z-
dc.date.created2021-08-24-
dc.date.issued2021-10-
dc.identifier.citationJOURNAL OF PHYSICS D-APPLIED PHYSICS, v.54, no.43-
dc.identifier.issn0022-3727-
dc.identifier.urihttp://hdl.handle.net/10203/287405-
dc.description.abstractUsing the linearized Landau-Lifshitz-Gilbert (LLG) equation in the rotation coordinate, we calculate the critical switching current density of a perpendicular magnetic tunnel junction (MTJ), where magnetization switching is achieved by the interplay of spin-transfer and spin-orbit torques. In terms of the critical current density, we find that as the current density inducing the spin-orbit torque (j(SOT)) increases, the current density inducing the spin-transfer torque (j(STT)) decreases nonlinearly. In the presence of the spin-orbit field-like torque (beta), the critical switching current density by the spin-transfer torque is proportional to the damping constant (alpha) as the conventional spin-transfer torque switching, while the critical switching current density by the spin-orbit torque increases with root alpha when H-eff >> H-SOT. We also investigated the beta dependence of the critical switching current density. For a given j(SOT), the critical switching current density for the spin-transfer torque, j(STT,c) decreases linearly with increasing beta and nonlinearly decreases with increasing j(SOT) for a given beta. Further, we discuss the beta dependence of the critical switching current density on energy.-
dc.languageEnglish-
dc.publisherIOP PUBLISHING LTD-
dc.titleCritical switching current of a perpendicular magnetic tunnel junction owing to the interplay of spin-transfer torque and spin-orbit torque-
dc.typeArticle-
dc.identifier.wosid000683557900001-
dc.type.rimsART-
dc.citation.volume54-
dc.citation.issue43-
dc.citation.publicationnameJOURNAL OF PHYSICS D-APPLIED PHYSICS-
dc.identifier.doi10.1088/1361-6463/ac181a-
dc.contributor.localauthorShin, Mincheol-
dc.contributor.nonIdAuthorKang, Doo Hyung-
dc.contributor.nonIdAuthorByun, Ji-Hun-
dc.description.isOpenAccessN-
dc.type.journalArticleArticle-
dc.subject.keywordAuthorspin transfer torque-
dc.subject.keywordAuthorspin orbit torque-
dc.subject.keywordAuthorcritical current density-
dc.subject.keywordPlusFIELD-
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EE-Journal Papers(저널논문)
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