Please use this identifier to cite or link to this item:
Title: Micromagnetic simulations of current-induced magnetization switching in Co/Cu/Co nanopillars
Authors: Xiao, Z. H.
Ma, X. Q.
Wu, P. P.
Zhang, J. X.
Chen, L. Q.
Shi, San-qiang
Subjects: Cobalt
Current density
Exchange interactions (electron)
Ferromagnetic materials
Magnetic anisotropy
Magnetic multilayers
Magnetic switching
Magnetisation reversal
Nanostructured materials
Spin polarised transport
Issue Date: 1-Nov-2007
Publisher: American Institute of Physics
Source: Journal of applied physics, 1 Nov. 2007, v. 102, no. 9, 093907, p. 1-6.
Abstract: We studied the current-induced magnetic switching in Co/Cu/Co nanopillars with an in-plane magnetization traversed by a perpendicular-to-plane spin-polarized current. The Landau-Lifshitz-Gilbert equation incorporating the spin transfer torque (STT) effect was employed. Magnetization switching was found to take place when the current density exceeds a threshold. It is accompanied by drastic oscillations near the magnetic reversal point. The switching time depends on the applied current density. The magnetization can also be switched by a sufficiently long square pulsed current. The roles of anisotropy, exchange, and demagnetization energies in the magnetization switching process of nanopillars are discussed. It is shown that the switching is mainly determined by the competition between STT and the Gilbert damping torque.
Rights: © 2007 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Z. H. Xiao et al., J. Appl. Phys. 102, 093907 (2007) and may be found at
Type: Journal/Magazine Article
DOI: 10.1063/1.2800999
ISSN: 0021-8979 (print)
1089-7550 (online)
Appears in Collections:ME Journal/Magazine Articles

Files in This Item:
File Description SizeFormat 
Xiao_Micromagnetic_simulations_current-induced.pdf495.24 kBAdobe PDFView/Open

All items in the PolyU Institutional Repository are protected by copyright, with all rights reserved, unless otherwise indicated. No item in the PolyU IR may be reproduced for commercial or resale purposes.