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Quantum Properties of an Andreev Phase Gradiometer

P Cook·V C Hui·C J Lambert
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Abstract

A new class of nano-structure devices is suggested, based on interference from the order parameter phase gradient of a single superconductor (S) in contact with a single normal metallic lead (N). By solving the Bogoliubov - de Gennes equation in two dimensions, it is demonstrated that the electrical conductance of a normal conductor of width $M$ in contact with a superconductor will oscillate as the phase gradient $v$ at 90$^0$ to the interface is increased. This effect is enhanced by the presence of a Schottky barrier at the interface and is also present in $N-S-N$ structures.

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P Cook, V C Hui, C J Lambert. 1994-09-12. Quantum Properties of an Andreev Phase Gradiometer. https://arxiv.org/abs/cond-mat/9409047

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