Please use this identifier to cite or link to this item:
|Title:||Analysis of spin transfer torque in Co/Cu/Co pseudo-spin-valve with perpendicular magnetic anisotropy||Authors:||Jalil, M.B.A.
|Keywords:||Pseudo spin valve
Spin transfer torque
|Issue Date:||1-May-2009||Citation:||Jalil, 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||Abstract:||Perpendicular-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.||Source Title:||Physica B: Condensed Matter||URI:||http://scholarbank.nus.edu.sg/handle/10635/81964||ISSN:||09214526||DOI:||10.1016/j.physb.2008.12.021|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Sep 16, 2020
WEB OF SCIENCETM
checked on Sep 9, 2020
checked on Sep 13, 2020
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.