Title :
Enhanced Perpendicular Spin Transfer Torque in Magnetic Multilayers With a Capping Layer
Author :
Chung, Nyuk Leong ; Jalil, Mansoor B.A. ; Tan, Seng Ghee
Author_Institution :
Electr. & Comput. Eng. Dept., Nat. Univ. of Singapore, Singapore, Singapore
fDate :
6/1/2010 12:00:00 AM
Abstract :
In this paper, we model the effects of the physical properties of the capping layer, such as spin diffusion length (lsf cap), resistivity (¿cap), and interfacial conductance (G¿ cap, G¿ cap) on the spin transport across a pseudo-spin-valve (PSV) structure. In particular, we investigate how the properties of the capping layer can be modified in order to enhance the perpendicular component (¿¿) of the spin transfer torque vis-a¿-vis the inplane (¿¿) component. The results suggest that the capping layer can serve as an effective medium for tuning the ratio of ¿¿ to ¿¿ by varying its physical properties.
Keywords :
electrical resistivity; magnetic multilayers; spin dynamics; spin polarised transport; spin valves; capping layer; interfacial conductance; magnetic multilayers; perpendicular component; perpendicular spin transfer torque; physical properties; pseudospin-valve structure; resistivity; spin diffusion length; spin transport across; Computer interfaces; Equations; Laboratories; Magnetic materials; Magnetic multilayers; Magnetic switching; Magnetization; Material storage; Physics computing; Torque; Magnetic-film memories; magnetic films; magnetoresistance; spin transfer torque;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2010.2044141
