Possibility of reflectionless tunneling crossed transport at normal metal / superconductor double interfaces

Details Possibility of reflectionless tunneling crossed transport at normal metal / superconductor double interfaces Possibility of reflectionless tunneling crossed transport at normal metal / superconductor double interfaces

2006-01-19

arxiv.org/abs/cond-mat/0601442v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

7 pages, 5 figures

Scientific paper

We investigate one dimensional models (the Blonder, Tinkham, Klapwijk model and a tight-binding model) of non local transport at normal metal / superconductor (NS) double interfaces. We find a negative elastic cotunneling crossed conductance, strongly enhanced by additional scatterers away from the interfaces, suggesting the possibility of reflectionless tunneling non local transport at double NS interfaces with contacts having a sufficiently small extension.

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