Contribution of weak localization to non local transport at normal metal / superconductor double interfaces
Abstract
In connection with a recent experiment [Russo et al., Phys. Rev. Lett. 95, 027002 (2005)], we investigate the effect of weak localization on non local transport in normal metal / insulator / superconductor / insulator / normal metal (NISIN) trilayers, with extended interfaces. The negative weak localization contribution to the crossed resistance can exceed in absolute value the positive elastic cotunneling contribution if the normal metal phase coherence length or the energy are large enough.
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