Size dependence of intrinsic spin transfer switching current density in elliptical spin valves

作者：Heindl R^*; Russek S E; Silva T J; Rippard W H; Katine J A; Carey M J

来源：Applied Physics Letters, 2008, 92(26): 262504.

DOI：10.1063/1.2953980

We studied current-induced magnetization reversal in elliptical spin valves with CoFeB free layers. The data obtained from high-speed pulsed switching experiments showed that the intrinsic switching current densities were size dependent and 50%-100% higher than predicted by a single-domain model. Micromagnetic simulations reveal a complex behavior of magnetization switching in which end-mode oscillations are important, and indicate that the switching current density depends on the device dimensions. Experimental values for the intrinsic switching current density agree with those predicted by micromagnetic simulations.

• 出版日期2008-6-30