Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.physb.2008.12.021
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dc.titleAnalysis of spin transfer torque in Co/Cu/Co pseudo-spin-valve with perpendicular magnetic anisotropy
dc.contributor.authorJalil, M.B.A.
dc.contributor.authorGuo, J.
dc.contributor.authorTan, S.G.
dc.date.accessioned2014-10-07T04:23:47Z
dc.date.available2014-10-07T04:23:47Z
dc.date.issued2009-05-01
dc.identifier.citationJalil, M.B.A., Guo, J., Tan, S.G. (2009-05-01). Analysis of spin transfer torque in Co/Cu/Co pseudo-spin-valve with perpendicular magnetic anisotropy. Physica B: Condensed Matter 404 (8-11) : 1305-1309. ScholarBank@NUS Repository. https://doi.org/10.1016/j.physb.2008.12.021
dc.identifier.issn09214526
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/81964
dc.description.abstractPerpendicular-magnetized pseudo-spin-valves (PSV) boast the advantages of lower aspect ratio, greater magnetic stability and thermal stability; and hence constitute a promising candidate for achieving higher integration area density. In this paper, we investigate the spin transport and spin transfer torque in a Co/Cu(1 1 1)/Co perpendicular PSV structure where the magnetization of the Co layers are oriented in the out-of-plane direction, in the presence of a spin-polarized current in the perpendicular-to-plane (CPP) geometry. Both ballistic spin-dependent transmission/reflection at the two Co-Cu interfaces and diffusive spin relaxation within the Co and Cu layers are considered in our model. The ballistic calculations predict an absorbed spin current component at the Cu-free Co interface, which constitutes the main source (∼90%) of the total spin transfer torque in the free Co layer. The remaining torque arises from the spin relaxation of transmitted spin current within the free Co layer. Our model predicts a lower range of the critical current density of less than 107 A/cm2 for perpendicularly magnetized PSVs, while that for in-plane magnetized PSVs is of the order of several 107 A/cm2. Additionally, perpendicularly magnetized PSVs also possess other practical advantages which make them promising candidates for future MRAM applications. © 2008 Elsevier B.V. All rights reserved.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1016/j.physb.2008.12.021
dc.sourceScopus
dc.subjectPseudo spin valve
dc.subjectSpin transfer torque
dc.typeArticle
dc.contributor.departmentELECTRICAL & COMPUTER ENGINEERING
dc.description.doi10.1016/j.physb.2008.12.021
dc.description.sourcetitlePhysica B: Condensed Matter
dc.description.volume404
dc.description.issue8-11
dc.description.page1305-1309
dc.description.codenPHYBE
dc.identifier.isiut000265886100051
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