Spin-memory loss at Co/Ru interfaces

Details Spin-memory loss at Co/Ru interfaces Spin-memory loss at Co/Ru interfaces

2011-04-15

arxiv.org/abs/1104.3095v1

Phys. Rev. B 84, 014425 (2011)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

9 pages, 9 figures

Scientific paper

10.1103/PhysRevB.84.014425

We have determined the spin-memory-loss parameter, $\delta_{Co/Ru}$, by measuring the transmission of spin-triplet and spin-singlet Cooper pairs across Co/Ru interfaces in Josephson junctions and by Current-Perpendicular-to-Plane Giant Magnetoresistance (CPP-GMR) techniques. The probability of spin-memory loss at the Co/Ru interface is $(1-exp(-\delta_{Co/Ru}))$. From the CPP-MR, we obtain $\delta_{Co/Ru} = 0.34^{+0.04}_{-0.02}$ that is in good agreement with $\delta_{Co/Ru} = 0.35 \pm 0.08$ obtained from spin-triplet transmission. For spin-singlet transmission, we have $\delta_{Co/Ru} = 0.64 \pm 0.05$ that is different from that obtained from CPP-GMR and spin-triplet transmission. The source of this difference is not understood.

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