Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/12693
Title: Magnetization switching modes in nanopillar spin valve under the external field
Authors: Huang, H
Ma, X
Yue, T
Xiao, Z
Shi, S 
Chen, L
Keywords: Current-induced nanopillar
Domain wall motion reversal
Magnetization switching
Spin transfer torque
Uniform magnetization reversal
Issue Date: 2011
Publisher: Science in China Press
Source: Science China. Physics, mechanics and astronomy, 2011, v. 54, no. 7, p. 1227-1234 How to cite?
Journal: Science China. Physics, mechanics and astronomy 
Abstract: The current-induced magnetic switching is studied in Co/Cu/Co nanopillar with an in-plane magnetization traversed under the perpendicular-to-plane external field. Magnetization switching is found to take place when the current density exceeds a threshold. By analyzing precessional trajectories, evolutions of domain walls and magnetization switching times under the perpendicular magnetic field, there are two different magnetization switching modes: nucleation and domain wall motion reversal; uniform magnetization reversal. The first mode occurs at lower current density, which is realized by the formation of the reversal nucleus and domain wall motion; while the second mode occurs through complete magnetization reversal at higher current density. Furthermore, the switching time reduces as the spin-polarized current density increases, which can also be grouped into two reversal modes.
URI: http://hdl.handle.net/10397/12693
ISSN: 1674-7348
DOI: 10.1007/s11433-011-4313-1
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