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Transport across a normal-superconducting interface: a novel probe of electron-electron interactions in the normal metal

P. Dolby·R. Seviour·C. J. Lambert
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Abstract

In this letter, we examine the effect of Coulomb interactions in the normal region of a normal-superconducting (N/S) mesoscopic structure, here the change from an attractive to a repulsive coulombic interaction, at the N/S interface, causes a shift in the order parameter phase. We show that this shift has a pronounced effect on Andreev bound states and demonstrate that the effect on Andreev scattering of non-zero order-parameter tails, can be used to probe the sign of the interaction in the normal region.

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P. Dolby, R. Seviour, C. J. Lambert. 2000-10-19. Transport across a normal-superconducting interface: a novel probe of electron-electron interactions in the normal metal. https://doi.org/10.1088/0953-8984/13/6/103

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