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Analysis of scattering lengths in Co/Cu/Co and Co/Cu/Co/Cu spin-valves using a Ru barrier
Physical Review B (Condensed Matter)
We use uncoupled Co/Cu/Co and Co/Cu/Co/Cu spin-valve structures with a Ru barrier shifted through the top Co and Cu layer, respectively, to measure the longest of the electron mean free paths in Co and Cu as originally suggested by Parkin. From semiclassical transport calculations and careful analysis of the magnetoresistance data we conclude that the exponential behavior of ⌬G is uniquely related to the longest of the Co and Cu mean free paths under the condition of effective spin-dependentdoi:10.1103/physrevb.54.9365 pmid:9984674 fatcat:hiz7choqtrc7ln24jfnzvo7xga