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Title: Current-induced magnetization reversal mechanisms of pseudospin valves with perpendicular anisotropy
Authors: Guo, J. 
Jalil, M.B.A. 
Bae, S. 
Tan, S.G. 
Issue Date: 2007
Citation: Guo, J., Jalil, M.B.A., Bae, S., Tan, S.G. (2007). Current-induced magnetization reversal mechanisms of pseudospin valves with perpendicular anisotropy. Journal of Applied Physics 102 (9) : -. ScholarBank@NUS Repository.
Abstract: We present a numerical simulation of current-induced magnetization switching (CIMS) in pseudospin-valve (PSV) structures exhibiting perpendicular anisotropy. The PSV structures consist of a reference layer of Co/Pt and Co/Ni multilayers and a free layer composed of Co/Ni multilayers. The spin torque induced by the passage of a spin-polarized current is modeled by means of a modified Landau-Lifshitz-Gilbert equation, which incorporates two additional spin-torque terms. Numerical micromagnetic simulations of the magnetization switching process predict a critical current density of the order of 107 A cm2, a value consistent with available experimental results. In addition, we investigate the influence of the current sweep rate and the ratio of the in-plane and out-of-plane torque coefficients on the stability of the magnetization switching process. Our analysis provides a useful guide for optimal utilization of the CIMS effect in perpendicularly magnetized multilayers, for use in prospective spintronic applications. © 2007 American Institute of Physics.
Source Title: Journal of Applied Physics
ISSN: 00218979
DOI: 10.1063/1.2803720
Appears in Collections:Staff Publications

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